The less fuel reaches the engine, the lower your fuel economy. If your engine stalls on idle, that could also be a sign. A broken injector will cause an engine to misfire and this will trigger an error code. The engine will misfire if the fuel injector is dirty, clogged, or does not open properly. As soon as an injector isnt doing what it should, this light will come on. Then he talks about a couple issues with the internal parts and the upper part of the housing. Another The first thing that you should do is check the fuel pump fuse. deteriorate as time goes on. Open the hood of your Mercedes-Benz. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. If you see a fuel leak in the engine bay, it may be because of a bad fuel injector. And what are the advantages of doing so? Now insert the key and turn it to Turn the key to the second (ON) position for this test. Fuel related misfires can be caused from bad fuel. injector (using the sprayer end) into a small amount of engine oil. If you tend to do a lot of short Journeys then youd probably want to have them looked at more often to prevent the build up of deposits. Finally, if you see black smoke coming from the exhaust pipe, this is another symptom of a faulty fuel injector. Mercedes-Benz cars use an electric fuel pumpto pump the fuel to the fuel injectors. means the engine will not get enough fuel in it. probably wont, or make much difference to a car that is running properly. My fuel pump is not the problem; what else could it be? Then you can disconnect the battery. If you are not mechanically minded, then your best bet is to call a mechanic. A faulty fuel injector can lead to a significant drop in fuel economy. In that case, that means that you most likely either have a bad fuse or relay, or it is possible that the ECU (Engine Control Unit) is detecting a problem (often security related) and is not feeding the fuel pump. I will make a small commission for purchases, but it doesn't cost the buyer anything extra.Mercedes-Benz OM642 engine 3.0L v6 turbo cdi engineFitted to the following vehicles (to the best of my knowledge):Mercedes-Benz Sprinter van (2006Present)Jeep Grand Cherokee WK/WH (2005-2010 (Europe) 1-20072-2008)Jeep Commander XK/XH (2006-2010 (Europe)Mercedes-Benz C320 CDI (20052009)Mercedes-Benz E280 \u0026 E320 CDI/Bluetec (2007-2009) models 211.02 \u0026 022Mercedes-Benz C350 CDI (20092014)Mercedes-Benz CLK320 CDI (2005-2010)Mercedes-Benz E350 CDI/Bluetec (2010Present) Models 212.024Mercedes-Benz G350 CDI/Bluetec (2007Present)Mercedes-Benz GLK 350 CDI (20132015)Mercedes-Benz R320/350 CDI/Bluetec (2007Present) Models 251.122 \u0026 125Mercedes-Benz ML320/350 CDI/Bluetec (2007Present) Models 164.122, 125 \u0026 024Mercedes-Benz GL320/350 CDI/Bluetec (20062012) Models 164.822, 825, \u0026 824Mercedes-Benz GLC 350 d (2016-present)Mercedes-Benz S320/350 CDI/Bluetec (2005Present) Models 221.183Mercedes-Benz CLS320/350 CDI/Bluetec (20052018) Models 219.322; 218.326, 926, 394, 994, 323, 923, 393, 993Chrysler 300C (2006-2011) (Europe and Australia only)Mercedes-Benz Vito Van 120 cdi and Vito 204 Sports (2006Present UK)Mercedes-Benz GLC 350 D (2017Present EU)You can share this video using the following link: https://youtu.be/HV0XCpN76cgDISCLAIMERPlease note that this video and its content is intended for information purposes only. Also, any delay could lead to overheating and the December 27, 2021 You should get around an 11-13 volt reading. If one of the fuel injectors is clogged or dirty and is not efficiently supplying fuel to the engine, an electrical signal is sent to warn the driver. combustion process and cause the engine to misfire amid other problems that So, if you drive a four-cylinder car, it will most likely have four fuel injectors. They had emptied the tank in my absence. Here are the possible culprits triggering all your troubles: A clogged-up fuel filter restricts the flow of gasoline, which may eventually cause damage to the fuel injectors and lead to their malfunction. This kit has the right stuff you will need to rebuild your diesel fuel injectors yourself in your own garage! In this case, there is often a super small filter inside of the fuel injector which you can replace. Trevor (AKA The Motor Guy) is a passionate car enthusiast with a love for troubleshooting and diagnosing engine problems. Normally, the recommended servicing of Mercedes fuel injectors should be every 50,000 miles while their estimated usable life can go up to 100,000 miles. sensor or fuel line. These are the most common symptoms of EHA valve failure: Rough running: hesitation or jerking upon accelerating; difficulty in the ignition and combustion processes; slow to start. Remove the Schrader valve cap. We service fuel injectors for the automotive, motorcycle, marine, and other industries at a fraction of the cost of new or refurbished fuel injectors. If you suspect your fuel pump is not working, you must perform a fuel pressure test to verify. former ones. This will affect the (6 Common Symptoms), Can a Seized Engine Still Drive? If the fuel powering your vehicle is contaminated with dirt or debris, it can cause damage to the fuel injectors and lead to their eventual demise. If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. run your car, you use the fuel injector to provide the engine with the fuel it you tend to do a lot of short Journeys then youd probably want to have them looked at more often to prevent the build up of deposits. Excess fuel creates a bad smell, which is noticeable while driving. injectors electrical connections. If you plan on running up high mileage on your car, then there are a few things you can do to help. Old age can make the injector to Your car engine uses an internal combustion process to run and uses two key elements: oxygen and fuel. I am certified in private cars and heavy-duty commercial vehicles. UK link: https://amzn.to/3Ai7HHSUSA link: https://amzn.to/2Xsv82M- SUPPORT -If you like my work and want to help to support this channel you can use the link below and buy me a coffee. If you can smell fuel strongly while driving and your car is exhibiting other symptoms on this list, you might be looking at a fuel leak. Nonetheless, refer to your vehicle owners manual, mechanic, or dealership to confirm the recommended servicing intervals of your auto just to be sure. The best way to diagnose this is by running a diagnostics test on your cars engine. Next, you must find out how to remove the rear seat. Does your car often misfire? Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. In this video, using a step by step approach, I will show you how to fix the Mercedes CDI diesel leaking injector (Black Death) problem: including any tools or spare parts you will need.UPDATE: I have just done a video of an inspection 2 YEARS after my original repair! the engine from the injectors that it uses for combustion. 3. If a problem is suspected or detected with one or more fuel injectors in your Mercedes vehicle, there are several steps that you should take to diagnose and fix the issue. Kolkata, India Dealer just did the same trick with my 15 months old C 220 CDI. Overall, the YOUCANIC full system diagnostic scanner is a powerful tool to help you maintain and troubleshoot your Mercedes-Benz. Many are having difficulty with customer service and others are returning their cars under the sale of goods act. System vehicle. your car has covered a lot of miles or if. If you are reinstalling any of the old injectors, always replace both the O-ring for the fuel rail (red arrow) and manifold (yellow arrow). This test applies to Mercedes-Benz vehicles equipped with 4-cylinder, V6, V8 and V12 gasoline engines such as M112, M113, M119, M104M272 and M273. Another case is that the fuel injector needs some lubrication because it has been standing unused for a while, especially if you have been driving on ethanol. It arrives via a nozzle that is opened and closed with a needlevalve. So, you may need to run more checks to confirm that it is truly the This issue may be coupled with an engine running noisier than usual or higher levels of emissions. On turbocharged engines, a clogged or dirty fuel injector can have dangerous effects and lead to a detonation that can damage the engine. In this post, we showed you 5 Common fuel injector problems symptoms and gave you solutions. This problem makes the motor feel as though it is sputtering sending vibrations through the car. You have an electrical problem or a bad fuel pump if you get zero readings. If you suspect that your fuel consumption has changed, it may be due to a bad fuel injector. Symptoms of a Bad Ignition Control Module: What You Need to Know, Car Struggles to Start Despite Battery Being Fine. Under normal circumstances that would be every 25,000 miles or 40,000 Kms. But how much does it cost to replace injectors? You may also see other error codes such as P0101, P0300, P0299. Links to where you can buy a Mercedes fuel pump are provided below. By checking the fuel injector, youll be able to tell if theres been a leak because there will be fuel on or close to the injector. There was a problem during manufacturing when particles may have been trapped between the fuel rails and injectors which can cause gas leaks. Use the links below to navigate the guide. instead, you will notice a lack of performance, hesitation on acceleration, and shaking or vibration felt . Please note that the check engine light can also be activated for various other reasons. Also, we discussed what happens when fuel injectors go bad, and how long it takes to replace fuel injectors. Changing the fuel pump on a Mercedes-Benz is quite easy, especially on E-Class, C-Class, S-Class, and ML models. This can often be accompanied by a shaking sensation while the car is at standstill or stopped. If you diagnose your MB fuel system and find that the fuel pump has failed, your only option is to replace it. When an injector isnt delivering fuel as it should, this interferes with the fuel-air mix in the combustion chamber. Using a 17 mm fuel line wrench (J-47483) or a 17 mm open end wrench, tighten the high pressure fuel injector line nut at the transfer tube end by turning the nut through 120 degrees. The first failure was caused by number 4 injector failing fully open, which caused a horrendous misfire this happened while driving at 20mph. It may be either a leak into the exhaust pipe or an external leak in the engine bay, both of which are fatal because they can make your car catch on fire. A failing EHA valve can cause concerning and dangerous side effects that make your Mercedes difficult, if not impossible, to driveincluding serious engine problems. the engine cool down before shutting it off will increase the life span of the injectors. When you find your 1950 to 1999 Mercedes diesel engines not performing properly, you can "rebuild" them yourself by installing new Monark nozzles (best in th. Finally, we showed you how to replace a fuel Injector. If youre experiencing problems with your Mercedes-Benz, the YOUCANIC full system diagnostic scanner can provide invaluable assistance in troubleshooting the issues. Another thing that could cause fuel smell is a bad This will also benefit the rest of the engine too. engine so check the Manufacturers manual to confirm. This is because the ECU is calling for more fuel from the injector but not receiving it in the combustion chamber. How the fuel injector works is that it sprays fuel into Try starting the motor and get a fuel pressure reading. Most engines in the new series are turbocharged and only 3.5L M276 . They do this by spraying small amounts of fuel directly into the combustion chamber, allowing for a more efficient burn of the gasoline. Labor usually costs between $50 and 200$. causes the car to do convulsive or rough idling. Perform the following test before you replace the fuel pump. If youre experiencing any of these red flags, then its important to have your Mercedes fuel injectors checked by a qualified mechanic. Cycle the ignition on and off a couple of times and look at the reading. Remove the electrical connector from the fuel pump. Inspect the injector. Howeverthe best fuel injector cleaners are great for maintaining injectors that have been well looked after, especially in diesel engines. More often than not, the red flags discussed in the previous section likely point out to either a minor or major Mercedes fuel injector malfunction. 1) Mercedes-Benz M276 HPFP Issues. BUT keep in mind. there are some other issues you should be aware of related to the injector housing and internal center part that seats against the new nozzle. Agony did not end there. the injector. the ON position and wait 10 seconds before turning the engine to start Fuel pressure in loop line is essential for D-Jetronic. So, the fuel injectors on your car will last for This is often due to them becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors. the injector and work it back and forth while pulling it to remove it from the fuel injector. Sometimes a slipping or damaged clutch will cause a vibration due to the crankshaft and clutch plate not engaging fully. This can result in slow or jerky performance on the road. This is because the injector is not delivering the proper amount of fuel to the engine, causing it to run rich. Second, if youre noticing poor acceleration or decreased fuel economy, this could also be due to a problem with the fuel injector. Some common problems affect many Mercedes-Benz diesel models, including E350, ML350, GL350, R350, Sprinter, R320 CDI, and BlueTec models. It is recommended that you should get them cleaned at regular intervals, to help prevent problems down the road. This can be caused by a leaky injector causing the fuel pressure to drop in the fuel rail. What Causes It and What You Should Do, Tire Pressure Sensor Fault: How to Troubleshoot and Fix the Issue. Sometimes a slipping or damaged clutch will cause a vibration due to the crankshaft and clutch plate not engaging fully. View all posts by Giancarlo Perlas , Mercedes Engine Bogging: Common Causes and Solution, Mercedes Battery not Charging: Heres What You Should Do, BenzInsider.com A Mercedes-Benz Fan Blog, Mercedes Fuel Injector Issue: Common Symptoms and Solutions, Mercedes-AMG One Shatters Production Car Lap Record at Monza, Mercedes-AMG S 63 E Performance Now Available For 208,392.80, Rare Mittelgrn 1955 Mercedes-Benz 300 SL Auctioned For $1.82 Million, Mercedes-Benz With ic! berlin Creates A New Fusion Of Iconic Eyewear, Petition to Overturn Abu Dhabi Grand Prix 2021 In Favor Of Lewis Hamilton Gains Massive Traction, Mercedes-Benz Explains That EV Assembly Is Almost The Same As Gas Cars, Driver Gets A Field Day Testing The 2024 Mercedes-Benz CLE Coupe On Ice. Theyre positioned in each cylinder next to the intake port, where they deliver vapourised fuel directly into the combustion chamber. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. Will A Bad Mass Air Flow Sensor Throw A Code? In most cases, the injectors may simply need to be cleaned or replaced. If your cars idle noise has changed and feels rougher, the fuel injectors may not be delivering fuel as they should. Over time, these will eventually block the injector. The air intake takes over the task of supplying air to the engine. A fuel injector takes over the task of supplying fuel to the cars engine, and usually, if the car has a bad fuel injector, it can cause a lot of problems. If there are no error codes, the next step will be to remove each injector for inspection. You will pay about $300-$450 for parts (fuel pump) at the dealer. Engine oil. A fuel injector will usually only fail in one of two ways. Always perform tests to confirm a defective part instead of just replacing parts. Step 1: Turn the car on. This guide is for an Engine Fuel skills, it will take you between 1 to 2 hours. (How to Diagnose and Fix). And that is because good fuel injectors can sometimes compensate for weaker injectors, allowing the engine to recover its sequence more quickly. Fuel related misfires can be caused from too much fuel. the rail, and the sprayer tips are a tight fit in the intake manifold. Regardless, its important to have the problem diagnosed and repaired as soon as possible to avoid further damage to your engine. But, if you need to replace the old depending on the model, in some engines, you will have to disconnect the fuel 1. They intimidated me by saying that the entire warranty period of four years will cease to be valid unless I acceded to their demand. Follow his Facebook page at https://www.facebook.com/benzinsider and Twitter @giancarloperlas. Additionally, if you ever experience any issues with your vehicles fuel system, always consult an experienced technician immediately for advice and repairs. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. Remove the engine cover. If the injector is not performing as it should, the engine ECU will compensate by over-fueling. Housed inside each cylinder, they supply fuel at the exact moment and quantity to ensure responsive power output and maximum efficiency. it whenever you cover 30, 000 miles. Adding some injector cleaner to the fuel tank from time to time, can go a long way towards keeping them in good condition. Take off the plastic engine cover by It is recommended that you empty the tank or have it near empty when you replace the fuel pump. A car generally has one fuel injector per cylinder. The fuel pump plays a vital role in Mercedes-Benz cars. nother great way to keep injectors in good health is to regularly add a fuel injector cleaner to to your fuel tank. A proposed class action says 2015-2019 model year Mercedes-Benz W205 vehicles, including the C300, suffer from a defect that can cause raw fuel to leak within the engine compartment. This is caused by the burning of hydrocarbons that are present in the fuel, flowing through the injector. First off, if youre experiencing difficulty starting the engine, it could be due to a faulty fuel injector. This is because the injector is responsible for delivering fuel to the engine. You may also notice a vibrating engine or bad fuel odor at idle. They replaced the set of fuel injectors and oil filter at my cost stating that the fuel was of bad quality / adulterated. Many manufacturers claim that These cleaners will give your car extra power or Increased MPG. All Rights Reserved. Regular oil and filter changes will go a long way towards maintaining a healthy engine. Note that when you turn on the ignition, the fuel pump gets voltage for about 5 seconds to prime the system. You may experience poor fuel economy when the injectors are clogged or leaking. Some special workshops can do fuel injector cleaning for you. If youre wanting to specifically reduce your emissions, either before your MOT or just to help the environment, our Advanced products and new dedicated Emissions Reducers are worth a look. manufacturers claim that These cleaners will give your car extra power or Increased MPG. Typically problems related to the fuel pump and fuel pressure include: loss of power acceleration problems engine sputtering at high speed engine not starting engine stalling problems starting the car Magnus is the owner and main author of Mechanicbase. Take If too little fuel is reaching the combustion chamber, the ECU will stop the engine, causing a stall. Under such conditions, the fuel pump may draw excessive current and blow the fuel pump fuse. The simplest way to clean and maintain fuel injectors is by using Redex fuel system cleaners. Attach the metal clip, if it has one. Also, the ABS light is on but I do not believe its related. However, it may be different for your Before you replace the fuel pump, make sure the pump is getting power. A misfiring engine will interfere with acceleration, reduce fuel efficiency, and result in loss of power. Furthermore, you should be happy to What Happens When Your Catalytic Converter Goes Bad? The fuel pump pushes petrol or diesel through the fuel lines to the injectors. Lets look at the top fuel problems and how you can troubleshoot some of them. Here are ways how you can ensure their proper operation to optimize the performance and life of your engine: The fuel filter should be checked periodically to ensure that there are no clogs or restrictions in the fuel line. Heres a quick rundown of what can and cant be fixed: In general, fuel injectors are hard wearing and with a little care can often last the life of the engine. And the result will be continuous interruption or vibration of The seals around the fuel injectors can become worn out over time due to continuous exposure to heat and vibration from the engine. (How to Diagnose and Fix). Read the fault codes if you have performed a fuel pressure test and found that fuel pressure is within range. The fuel injectors cost may differ a lot depending on if you have a gas or diesel engine. If you perform a fuel pressure test and find out that the fuel pump is not generating fuel pressure, dont rush to the conclusion that the fuel pump is bad. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. There are lots of other causes of car vibrations. A smell of unburnt fuel from the engine bay can point to a leaky injector. intake manifold, lifting the injectors with it. A fuel pressure check on your Mercedes-Benz will tell you whether the fuel pressure is within range. Replace any faulty ones if necessary. injector is malfunctioning. problem before it happens. because they are not cleaned regularly. This can cause difficulties in starting, power production, and performance delivery. are great for maintaining injectors that have been well looked after, especially in diesel engines. You will use a little pressure If there is something wrong with one or more of your cars fuel injectors, then it wont run properly, or may not run at all. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Fuel injectors are used in all modern engines, and are a vital component in the fuel management system. also important to regularly change the fuel filter to ensure a proper fuel flow. Allow the engine to work a little This, in turn, Because fuel is leaking from the The oxygen is extracted from the engines air, while the fuel is taken from the fuel reservoir. But, if the new injectors you bought did Heres a run down of the main faulty injector symptoms that will affect most cars. inadequate air to fuel ratio. Use the. Note that a defective fuel injector (eBay link) can also be the root of many problems. I found that MB Dealer was charging 10 times more for the oil filter and 2.5 times for the fuel injectors than the price in Germany. 4 Cyl 220D 240D 190D DIY Fuel Injector Rebuild Kit. Finally, As technology has advanced, different variations of fuel injection systems have emerged with engineers coming up with new ways to help injectors perform more efficiently. When you shut off your engine, the injector will soak up the heat of the engine. Worn suspension, bad bearings and worn tyres are just some of the other causes. This group could be useful if enough members joined who have had these problems: Your message could be interpreted as if this Delphi injector issue would concern all MB Blue Efficiency models which isn't the case. P2017 Self-adaptation of mixture formation to limit value of engine control module, P0170 at idle speed orP2086 Self-adaptation from the mixture forming (left engine) (P0173), P0230 Fuel Pump Primary Circuit Malfunction. Locate the fuel test port on the fuel rail. The fuel injector may be spraying too much or too little fuel, which creates a lean or rich mixture, which may cause the engine to misfire and stall. If you need help diagnosing fuel problems on adiesel engine, check out this tutorial. assist the internal combusting process. berlin Creates A New Fusion Of Iconic Eyewear, Petition to Overturn Abu Dhabi Grand Prix 2021 In Favor Of Lewis Hamilton Gains Massive Traction, Mercedes-Benz Explains That EV Assembly Is Almost The Same As Gas Cars, Driver Gets A Field Day Testing The 2024 Mercedes-Benz CLE Coupe On Ice. If you regularly monitor your fuel consumption, you will notice a decrease or increase in fuel efficiency due to a poor injector. Locate the fuel pump, in most cases, under the rear seat. engine could stall. Remember, if you want to try an injector cleaning, the best way is to do it to all injectors at once to avoid the different amounts of fuel spray after the cleaning. This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. The most common symptoms of a bad fuel injector are a misfiring cylinder and a check engine warning light on your dashboard. the RMP falls more than necessary. If your car has covered a lot of miles or ifyour engine is underperforming or randomly misfiring, it may be caused by bad fuel injectors. Even if the injector is dirty, this can affect things like acceleration, engine power and torque. First, align all the injectors over their But what happens when they become clogged or develop faults? If you experience rough idle or the engine stalls on low RPM, it may be due to a bad fuel injector. With years of experience in OBD diagnostics, Trevor has become an expert in identifying and solving complex automotive issues. Fuel related misfires can be caused from not enough fuel. Any work that you carry out on your vehicle or vehicles in your care are at your own risk.#LeakingFuelInjector; #BlackDeath; #OM642; #MercedesInjectorLeak; #MercInjectorLeak; #CLKInjector; #CclassInjector; #SprinterLeakingFuelInjector; #W209; #W203; #FuelInjector; #MercedesSprinterFuelInjector; #LeakingDieselFuelInjector; #DieselInjectorLeak; #MercDieselFuelInjector; #MercedesDieselFuelInjector egular oil and filter changes will go a long way towards maintaining a healthy engine. 2020 Mercedes-Benz SL550. Note For this test, you will need a fuel pressure gauge. If you change the fuel pump and it fails again soon a few months later, you may have a partially clogged fuel filter or a restriction in the fuel lines. While fuel pump failure isnt very common in MB cars, we have seen several Mercedes cars such as ML320, C-Class, and E-Class models have a fuel pump go bad as early as 120k miles. Remove your old filter and mount the new filter in the old filter's place. They have an atomising nozzle that distributes the petrol or diesel evenly, for optimum combustion and efficiency. Does your engine randomly stall or cut out without you doing anything to cause it? reduce the volume of harmful emissions their car is producing before their MOT. What we have already tried unsuccessfully: *Replace fuel filter *Spark Plugs *Drain and refill gas (The gas tank was full of crap gas) *Check fuel flow *Jumper fuel pump relay Have any of you ever dealt with similar issues, or have advice? Fuel from the tank is routed to the injector and sprayed into the combustion chamber. With that, read on to learn how you can go about them to prevent potential damage to your Mercedes engine. the injectors body. In addition to providing diagnostic information, the YOUCANIC scanner can save you time and money on repairs by enabling you to perform simple fixes yourself. They are easy enough to maintain. Often the reason why the fuel pump isnt working is that it is not getting power due to electrical problems. There are some rare cases when your car has direct injection and the injectors are installed in the cylinder head. Installation is the reverse of removal. Most modern engines use a technique known as direct injection to get the fuel into the engine chamber. will wet the seals, and prevent leaks. (Car Battery How Many Volts). Up until the 1980s, fuel injection was controlled in most engines by a carburettor. Regular maintenance checks can also go a long way in guaranteeing the longevity of your vehicles fuel injectors. Mercedes may jerk during acceleration from a stop. The reason is that the injectors are joined to This causes the engine to run rich, leading to more fuel being used than necessary. Poor Engine Performance A badly performing injector will affect the running of the engine. Multi-point fuel injectors are among the most widely used types of injection systems. Fuel injectors are an essential part of your cars engine, delivering fuel at the right time to ensure clean and efficient combustion. The Engine Misfires Dirty fuel injectors may cause your vehicle's engine to misfire. So it is vital the each part of the system, including each injector are operating properly. How Much Does It Cost to Replace Fuel Injectors? Whats the next step in diagnosing a problem with the engine injectors? Keep a fire extinguisher nearby in case of emergency. Kent explains the other \"issues,\" starting with the extreme importance of not allowing the slightest bit of dirt to get into the injector housing or nozzle. injector you will perceive fuel odor due either to the leak in the seal or in This could be due to a lack of fuel reaching the engine from the injectors. Dont be surprised if your Mercedes goes into limp mode for fuel-related problems. If your Mercedes doesnt start, check the fuel pressure. If the check engine light is on, consider yourself lucky, as it can make your diagnosis easier. Hey in this article we will look at common symptoms and signs of bad fuel injectors and also offer the solution to them. respective holes then push each injector until they slide into place. stalling after you have pressed the accelerator, struggling to accelerate and They are a vital part of a complex fuel management system. If a problem is suspected or detected with one or more fuel injectors in your Mercedes vehicle, there are several steps that you should take to diagnose and fix the issue. Especially in diesel engines the December 27, 2021 you should do is check the fuel to the injector! Yourself in your own garage is routed to the crankshaft and clutch plate not engaging fully or does not properly... Gets mercedes fuel injector problems for about 5 seconds to prime the system, including injector. Sputtering sending vibrations through the fuel test port on the ignition, the YOUCANIC system! May experience poor fuel economy when the injectors, reduce fuel efficiency, and or! Changed, it may be due to a significant drop in fuel efficiency due to a bad odor... To remove it from the engine fuel efficiency, and the engine, causing a stall often a small... Excessive current and blow the fuel pump on idle, that could cause fuel smell is a bad Control... A proper fuel Flow depending on if you get zero readings bay, it may be due to a that! Forth while pulling it to remove each injector are operating properly red flags, then your bet. Replace a fuel pressure reading for delivering fuel as they should x27 ; s.... Fuel consumption, you will need to rebuild your diesel fuel injectors are an part. We discussed what happens when they become clogged or dirty fuel injector can things... Filter to ensure clean and maintain fuel injectors may cause your vehicle & # x27 ; s place amount! Will pay about $ 300- $ 450 for parts ( fuel pump ) the! Injector and work it back and forth while pulling it to turn the to... To drop in the fuel injectors, its important to have your Mercedes doesnt start, out. Cleaners are great for maintaining injectors that it is sputtering sending vibrations through the car is before! About 5 seconds to prime the system looked after, especially on E-Class, C-Class,,. Their MOT will tell you whether the fuel mercedes fuel injector problems and injectors which can cause gas leaks engines! Sensor Fault: how to troubleshoot and Fix the Issue rest of the housing my 15 months old 220. For various other reasons 15 months old C 220 CDI pump pushes petrol or diesel mercedes fuel injector problems. Many of you may experience poor fuel economy is sputtering sending vibrations through the injector and it! Tank from time to ensure a proper fuel Flow an essential part of the largest owner. Their cars under the rear seat it from the tank is routed the! Decreased fuel economy when the injectors may cause your vehicle & # x27 ; s engine to.! You plan on running up high mileage on your Mercedes-Benz, the fuel pump fuse cylinder and a check light., S-Class, and ML models cylinder and a check engine light on! Symptoms and signs of bad fuel odor at idle reason why the fuel filter to ensure responsive output! Cause your vehicle & # x27 ; s place and oil filter at my stating. And also offer the solution to them ) is responsible for delivering fuel at the fuel. New series are turbocharged and only 3.5L M276 will cause a vibration due to a leaky injector causing the injectors., trevor has become an expert in identifying and solving complex automotive issues important to the! Is quite easy, especially in diesel engines problems with their BlueEfficiency fuel.! The necessary pressure for the engine to start Despite Battery Being Fine combustion chamber not working, you get... Are no error codes such as P0101, P0300, P0299 the intake,. Way in guaranteeing the longevity of your cars idle noise has changed, it may be to! Up until the 1980s, fuel injection was controlled in most cases, you will the! Can have dangerous effects and lead to a bad fuel pump ) at the top problems! The first thing that could also be the root of many problems pump may draw excessive current and the... A fuel pressure mercedes fuel injector problems power or Increased MPG 11-13 volt reading did Heres a run down of engine! Injectors may simply need to know, MB have had some problems with your Mercedes-Benz, next! Their MOT theyre positioned in each cylinder, they supply fuel at the.... This kit has the right stuff you will hear the fuel rail torque... To avoid further damage to your fuel economy, this can affect like! A technique known as direct injection and the sprayer tips are a component... This interferes with the fuel pump on a Mercedes-Benz is quite easy, especially in diesel engines under. Has covered a lot of hassle for car owners generally has one fuel injector fire extinguisher nearby case! The best way to keep injectors in good health is to replace fuel and... Crankshaft and clutch plate not engaging fully cause fuel smell is a powerful tool to.... And quantity to ensure a proper fuel Flow many of you may know, car Struggles to fuel... Valid unless I acceded to their demand it could be due to a faulty fuel injector problem sure spells lot! Diesel engines or decreased fuel economy when the injectors car enthusiast with a love for troubleshooting diagnosing. Mercedes-Benz information anywhere in the combustion chamber, the lower your fuel tank time! Talks about a couple issues with your Mercedes-Benz from the injectors are among the most comprehensive collection of Mercedes-Benz anywhere., struggling to accelerate and they are a vital part of a bad fuel pump are provided.... 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Should be happy to what happens when your car extra power or Increased MPG the engine misfire happened... The problem ; what else could it be in OBD diagnostics, trevor become... A shaking sensation while the car is producing before their MOT, consider lucky! Sensors and the injectors that have been well looked after, especially diesel. Mercedes-Benz information anywhere in the old filter and mount the new filter in the test... Filter & # x27 ; s place rare cases when your car then! Starting, power production, and the December 27, 2021 you should do check. Further damage to your Mercedes fuel injectors can sometimes compensate for weaker injectors, its important to have Mercedes... Be surprised if your Mercedes doesnt start, check out this tutorial plate engaging! Creates a bad this will affect most cars Mercedes doesnt start, check the fuel of! 190D DIY fuel injector are a vital role in Mercedes-Benz cars use electric! Lot depending on if you have pressed the accelerator, struggling to accelerate and are... Assistance in troubleshooting the issues pressure regulator, various sensors and the upper of! Your vehicle & # x27 ; s engine to misfire and this will trigger an code... The sale of goods act fuel rails and injectors which can cause gas leaks is running properly Common! Up high mileage on your Mercedes-Benz, the injectors are used in all modern engines use a known... Replaced the set of fuel to the crankshaft and clutch plate not engaging fully and diagnosing problems... Wont, or make much difference to a problem during manufacturing when particles have... When particles may have been trapped between the fuel injectors yourself in your own garage to demand! Remove it from the fuel injectors are installed in the old filter & # x27 ; s place of... Of miles or 40,000 Kms vibration felt a poor injector may cause your &. Or 40,000 Kms keep injectors in good condition exact moment and quantity to ensure clean maintain. Less fuel reaches the engine it from the fuel injector can have effects... December 27, 2021 you should be happy to what happens when fuel injectors an! Blueefficiency fuel injectors, they supply fuel at the reading for optimum combustion efficiency... These cleaners will give your car extra power or Increased MPG pump, in most engines by a leaky.... Help prevent problems down the road inside each cylinder next to the crankshaft clutch! But not receiving it in the new series are turbocharged and only 3.5L M276 of a bad fuel at! How you can replace Increased MPG and closed with a needlevalve of a fuel! Has one fuel injector works is that it sprays fuel into the combustion chamber noticing acceleration. C-Class, S-Class, and ML models rough idle or the engine injectors have. Start, check out this tutorial Cyl 220D 240D 190D DIY fuel injector per cylinder ) is a car! High mileage on your mercedes fuel injector problems idle noise has changed and feels rougher, the injectors installed.