I recommend replacing the fuel injector instead, though, because in most cases, the problem will occur again within a year after a fuel injector cleaning. These injectors are getting older and older and sometimes you many have to replace the housings and / or the center piece in order to complete a successful rebuild. Finally, Reconnect the battery to 1. The seals around the fuel injectors can become worn out over time due to continuous exposure to heat and vibration from the engine. Certified Automotive Diagnostic Technician. View all posts by Giancarlo Perlas , 10,000 Mercedes EV Charging Stations Targeted Globally, Facelifted 2024 Mercedes-Benz GLE SUV and Coupe Unveiled, BenzInsider.com A Mercedes-Benz Fan Blog, Diagnosing And Fixing A Mercedes Fuel Injector Problem, signs of fuel injector failure in Mercedes, the recommended servicing of Mercedes fuel injectors should be every 50,000 miles, 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! A simple way to check if the fuel pump is working is to turn the ignition to position II (all dash lights will turn on). 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. This is caused by the burning of hydrocarbons that are present in the fuel, flowing through the injector. If you are not mechanically minded, then your best bet is to call a mechanic. Keep a fire extinguisher nearby in case of emergency. finally, the worst-case scenario is to replace the bad fuel injectors which run your car, you use the fuel injector to provide the engine with the fuel it Theyprobably wont, or make much difference to a car that is running properly. Step 2: Set up DVOM to measure DC voltage. poor fuel economy. (In other words, if its adding too much or too little.). Then, with your hand gloves on, grip 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. Take away the fuel rail from the If it is wrong, the engine will have too much or too little fuel in all states of operation. respective holes then push each injector until they slide into place. The fuel injectors cost may differ a lot depending on if you have a gas or diesel engine. Replace the fuel pump on a Mercedes-Benz costs between $450 and $800, depending on the MB model. 120 degrees can be measured by turning the nut so that the nut edge which had been marked has been turned through 1/3 of a full turn, or through two nut flats. Even if the injector is dirty, this can affect things like acceleration, engine power and torque. have a fault or have a hole or be damaged. Whats the next step in diagnosing a problem with the engine injectors? If you have a couple of hours and some basic skills in car repair, you can replace the Mercedes fuel pump for under $250 (parts) or less. 4. Its also a good idea to regularly change the fuel filter and only use good quality fuel. Itsalso important to regularly change the fuel filter to ensure a proper fuel flow. Usually a problematic cold start injector will display a few symptoms that can alert the driver that a potential problem has occurred and needs to be serviced. All Rights Reserved. combustion process and cause the engine to misfire amid other problems that Fuel injectors are now used in pretty much all passenger vehicles. If needed, you can replace it with a new one as recommended by your cars manufacturer. Theyre positioned in each cylinder next to the intake port, where they deliver vapourised fuel directly into the combustion chamber. The Fora platform includes forum software by XenForo. will not fire. the engines cylinder. Faulty fuel injectors can make it difficult for the engine to accelerate properly. When you examine the injector visually you will When an injector isnt delivering fuel as it should, this interferes with the fuel-air mix in the combustion chamber. And, Mercedes-Benz cars use an electric fuel pumpto pump the fuel to the fuel injectors. So, if youre noticing problems including difficulty starting the engine, poor acceleration, decreased fuel economy, or black smoke coming from the exhaust pipe, then its likely that you need to have your fuel injectors serviced. symptom that corresponds to other engine problems that arise from other Take off the plastic engine cover by This is occurring because fuel is not burning properly as the This issue may be coupled with an engine running noisier than usual or higher levels of emissions. The average fuel injector replacement cost is between $100 and $500, depending on the car model and labor costs. 3. 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! Housed inside each cylinder, they supply fuel at the exact moment and quantity to ensure responsive power output and maximum efficiency. This could be a result of too much air entering it due to faulty fuel injectors. But, if you need to replace the old Each injector is linked to the electronic control unit (ECU) that controls how much fuel is injected and when it is injected. Mercedes-Benz is recalling about 160 of these vehicles equipped with gasoline engines that may leak fuel onto hot engine parts and cause fires. over the injectors functions and makes sure the exact quantity of fuel gets to Injectors were introduced as a replacement for the old carburettor system, since they let engines run with greater fuel efficiency and help to reduce emissions. The oxygen is extracted from the engines air, while the fuel is taken from the fuel reservoir. injector you will perceive fuel odor due either to the leak in the seal or in Fuel injectors spray fuel into a cars engine using electronic controlled valves, capable of opening and closing many times a second. 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 This, in turn, intake manifold, lifting the injectors with it. Usually, a bad fuel injector on an old-model car will show signs that will cause a cylinder misfire. The reason is that the injectors are joined to These factors could help you a lot in confirming the problem and zeroing in on the specific solution for it: If your vehicle is exhibiting a decrease in its fuel efficiency, this could be an indication of faulty fuel injectors. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. The air intake takes over the task of supplying air to the engine. This improves fuel economy and helps to reduce emissions. At idle, we got about 55 PSI with slight fluctuation (+/-2 PSI) when revving the engine. With thousands of vehicles failing the MOT for emissions reasons, drivers need to do all they can to reduce the volume of harmful emissions their car is producing before their MOT and making sure the fuel injectors are clean and well-maintained plays a big part in this. inspect the injectors with a flashlight for fuel leaks. System vehicle. manufacturers claim that These cleaners will give your car extra power or Increased MPG. Seek the help of an auto mechanic when necessary. However, without regular maintenance, fuel injectors can develop faults or become clogged, so you need to know how to spot the signs of a bad fuel injector how to fix it. Sometimes the problem can be caused by something else such as a bad ignition coil or a clogged fuel filter. *Interested to see how it is holding up??? 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. Doing this Here, we take a look at some of the common signs and symptoms associated with a faulty fuel injector. Locate the fuel pump, in most cases, under the rear seat. The less fuel reaches the engine, the lower your fuel economy. 1. This video should not be considered a substitute for seeking independent advice or the services of a professional. There are lots of other causes of car vibrations. In some cases, your fuel injector is actually just clogged with dirt. fuel rails before you crank the engine. Another great way to keep injectors in good health is to regularly add a fuel injector cleaner to to your fuel tank. A smell of unburnt fuel from the engine bay can point to a leaky injector. As soon as an injector isnt doing what it should, this light will come on. 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. A0009902907UK link: https://tidd.ly/3nuK88hUSA: https://amzn.to/3nyy0TGEngine featured in this video Mercedes-Benz OM642 engine 3.0L v6 turbo cdiTimecodes:0:00 - Intro6:00 - How to use Seafoam to remove carbon build up14:02 - How to remove a Stuck Fuel Injector using a Slide Hammer15:20 - How to create a tool to clean out the injector bolt hole16:25 - How to use a cutting tool to recut / clean up the injector seat 18:30 - Mercedes copper injector seal vs Honda 1647RBDE00 seal19:25 - How to torque up the new fuel injector boltI am a member of the Amazon affiliate program. 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. Fuel related misfires can be caused from bad fuel. The fuel injectors are located on the engines intake side, under the fuel rail, which is often located on the intake manifold. Also, dont forget to plug in the fuel Hi dear, my name is Jeffery Ekweghi, and I am a certified mechanic and autobody parts technician. And the engine could go off if Most fuel injector problems happen sources. or a good amount of force here. Sometimes fuel injectors can develop faults which impact on their performance or cause breakdowns. egular oil and filter changes will go a long way towards maintaining a healthy engine. On turbocharged engines, a clogged or dirty fuel injector can have dangerous effects and lead to a detonation that can damage the engine. The most common sign of a bad fuel injector is the check engine warning light, which appears on the dashboard. Symptoms Of A Clogged Or Bad Fuel Injector, How To Program A Key Fob To A Car in 8 Simple Steps, New Brakes Squeaking? They intimidated me by saying that the entire warranty period of four years will cease to be valid unless I acceded to their demand. This increases the chances of failure over time. Also, you can get a bottle of fuel You may also see other error codes such as P0101, P0300, P0299. the sign and so you know what is triggering a specific problem. Turn the key to position II and look at the reading. Replace any faulty ones if necessary. 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. 3 Steps Guide on How to start a car with a bad fuel pump + Symptoms of a Bad fuel pump, Effects Driving with Bad Fuel Injector (11 Signs of Bad Fuel Injectors), Simple Trick to Turn off Check Engine Light: Toyota Corolla & Toyota Camry, Navigating Misfires: Risks, Costs, and Consequences of Driving with Engine Issues, Top7Best Wireless Dash Cam Front and Rear: Ultimate Guide for Drivers, Easy Steps onHow toTintCarWindows withSpray. If youre experiencing any of these red flags, then its important to have your Mercedes fuel injectors checked by a qualified mechanic. For example, a fault with an injector in cylinder one would give a code of P0201. You should get around an 11-13 volt reading. Vibration is a fuel injector problem because fuel injection systems use one injector per cylinder, your engine may not completely shut down if only one injector isn't working. Although there are a few different reasons why a check engine light can switch on, it could be down to a fuel injector. Starting at $18.00 per manifold injector . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Here, we provide all the information you need to know about car fuel injectors, including what they are, how they work and the common symptoms to look out for when they go wrong. the engine. What are the Symptoms of Bad Fuel Injectors? Mar 19, 2020. care not to bend the fuel rail so dont use too much force. could cost you between the sums of $800 to $1,500 depending on the type of problem before it happens. learn that cleaning is the cure for most bad fuel injector problem. I created this site to share my expertise and experience with car lovers looking to resolve their car-related issues. When you shut off your engine, the injector will soak up the heat of the engine. Many are having difficulty with customer service and others are returning their cars under the sale of goods act. If your cars idle noise has changed and feels rougher, the fuel injectors may not be delivering fuel as they should. Finally, if you see black smoke coming from the exhaust pipe, this is another symptom of a faulty fuel injector. Changing dealers can impact the following items in your cart: Choose a Dealer Mercedes-Benz of Lynchburg Additionally, the scanner can perform diagnostic tests on various systems, such as the ABS, airbag, and steering systems, to help identify the underlying cause of any issues. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. A faulty injector will cause the engine to misfire, and this will trigger the engine management light. the engine cool down before shutting it off will increase the life span of the injectors. Does your car often misfire? They will be able to diagnose the problem and recommend the best course of action. Also, the ABS light is on but I do not believe its related. Replacing fuel injectors isnt common practice, and with the right servicing and upkeep, there should be no reason to have to do so. Next, reinstall the fuel rail. This causes any fuel left in the injector to evaporate, leaving behind hard deposits inside the injector. 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. Thanks!https://www.buymeacoffee.com/ReviveMyRideParts are as follows:Honda diesel fuel injector seals (copper washers) part number is 1647RBDE00UK link: https://tidd.ly/2J2kDMDUSA: Not sure where to buy these in USA but you could try the Honda main car dealersIf you prefer to use the MB fuel injector seal, the part number is: A6110170060Fuel Injector Bolt - Mercedes part no. Up until the 1980s, fuel injection was controlled in most engines by a carburettor. But, if the new injectors you bought did Several faults can cause a rough idle noise, including a bad spark plug or a dirty air filter, but clogged injectors are one of the most common reasons for this. The fuel injector problems symptoms could occur when there is too much emission due to incomplete burning of fuel or irregular burning of fuel. Home - Engine - Bad Fuel Injectors? Many manufacturers claim that These cleaners will give your car extra power or Increased MPG. 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. 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. Fuel injectors control the volume of fuel delivered to the combustion chamber, ensuring the right amount is injected at the right time. Will A Bad Mass Air Flow Sensor Throw A Code? deteriorate as time goes on. Change your vehicles engine oil regularly to help reduce wear and tear on the fuel injectors and other parts of the engine. You must remove the metal cover to access the top of the fuel pump. This is because too much fuel or too little will be enough to increase the emissions, and the catalytic converter will not be able to do its job properly. And, it will take about 1 to 2 hours to complete this They had emptied the tank in my absence. The injector and rail will have drops of fuel, so use the shop The fuel pump plays a vital role in Mercedes-Benz cars. The vehicle operates normally when you press the gas pedal slowly. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! inadequate air to fuel ratio. see a small metal clip that looks like a staple pin, use a small flathead Although every effort is made to ensure that all the information is correct, there is no guarantee that this is the case. This is often due to them becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors. Required fields are marked *. Usually, a bad fuel injector on an old-model car will show signs that will cause a cylinder misfire. CHECK IT OUT - https://youtu.be/7weS1vQ_1OICheck out more of my videos from my HOMEPAGE and please consider SUBSCRIBING https://www.youtube.com/channel/UCDh9ld83sqnlEe4OSGRUsIARecommended tools:Injector seat cutting tool - I used a 17mm flat reamer (Note: some use an angled reamer for this but the flat one worked for me with lasting results). 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. If you notice a fuel leak in your engine bay, you should replace it immediately. the injectors body. If you see a fuel leak in the engine bay, it may be because of a bad fuel injector. Through this website, he shares his knowledge and expertise with others, providing valuable insights and tips on how to keep your vehicle running smoothly. Howeverthe best fuel injector cleaners are great for maintaining injectors that have been well looked after, especially in diesel engines. 14th February may be synonymous with a well-known annual event that is Valentines Day, but 2022 also marks the celebration of another significant milestone in automotive history as Redex, the fuel additives manufacturer, turns 100 years old. If needed, you can replace it with a new one as recommended by your cars manufacturer. Set your digital multimeter to a 20-volt setting and connect it to the two main (black and red) lines going into the fuel pump. When the ECU activates the injector, pressurised fuel is sprayed into the combustion chamber through the nozzles. Many are having difficulty with customer service and others are returning their cars under the sale of goods act. Signs and Symptoms of a Faulty Fuel Injector. This tutorial will show you how to diagnose fuel-related problems and perform a fuel pressure test on Mercedesgasolineengines. Last updated on October 8th, 2021 at 06:57 pm. This causes the engine to run rich, leading to more fuel being used than necessary. sensor or fuel line. Ensure the engine is cold to touch. the engine from the injectors that it uses for combustion. Regardless, its important to have the problem diagnosed and repaired as soon as possible to avoid further damage to your engine. If you suspect your fuel pump is not working, you must perform a fuel pressure test to verify. reduce the volume of harmful emissions their car is producing before their MOT. I then tried to restart it but it was "hydrolocked" (with fuel)needless to say my initial thoughts were this is going to be expensive. not come with seals, buy new injector seals separately instead of reusing the between 50,000 and 100,000 miles. 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 the injector is not working properly, it can cause the engine to run lean, which means that theres less fuel being burned. Now insert the key and turn it to an engine isnt running efficiently, this can load extra pressure on injectors. towels to clean the fuel. A fuel injector is an important component of the fuel injection system found in almost all modern cars. You may also notice a vibrating engine or bad fuel odor at idle. Never carry this test if the engine is hot. This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. So, if you drive a four-cylinder car, it will most likely have four fuel injectors. instead, you will notice a lack of performance, hesitation on acceleration, and shaking or vibration felt . If your Mercedes-Benz doesnt start, always test that you have enough fuel pressure. This can become hard and brittle from the heat of the engine. relate to the smooth performance of the vehicle. Here are a few signs there might be something wrong with your fuel injectors. Multi-point fuel injectors are among the most widely used types of injection systems. A bad fuel pump can cause the engine no start condition or poor performance. injector cleaner for less than $15. Watch the video for more details. Do not start the car. 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. A broken injector will cause an engine to misfire and this will trigger an error code. You will need to investigate further to narrow down the cause of the misfire. If an engine isnt running efficiently, this can load extra pressure on injectors. First, lets look at the signs. Remove your old filter and mount the new filter in the old filter's place. The simplest way to clean and maintain fuel injectors is by using Redex fuel system cleaners. Fuel from the tank is routed to the injector and sprayed into the combustion chamber. problems, this would affect the performance of the engine and the car will Worn suspension, bad bearings and worn tyres are just some of the other causes. Save my name, email, and website in this browser for the next time I comment. Symptoms include a lack of acceleration when you press the gas pedal or a vehicle trying to stall. And that is because good fuel injectors can sometimes compensate for weaker injectors, allowing the engine to recover its sequence more quickly. This is because the injector is responsible for delivering fuel to the engine. You would recall that vehicles made By connecting to your cars onboard computer, the scanner can read fault codes and provide detailed information about any problems with your engine, transmission, brakes, and other systems. A failing fuel pump typically delivers too little fuel or, in certain cases, too much fuel from the gas tank. Attach the metal clip, if it has one. Please note that the check engine light can also be activated for various other reasons. If its not working properly, then the engine wont receive enough fuel and will have trouble starting. If the fuel injectors spray pattern has changed, and it is injecting too little or too much fuel into the engine, your car will most likely not pass the emission test. If the injector cant deliver the dose of fuel called for by the ECU, the fuel-air mix in the combustion chamber will be off, which can lead to misfiring or a sudden drop in acceleration. A faulty Throttle Actuator Gas Pedal Position Sensor or a defective Throttle Valve Body may also cause such symptoms. line from the fuel rail to remove the rail. Often the reason why the fuel pump isnt working is that it is not getting power due to electrical problems. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. Justremember that Diagnosing any problems quickly will help prevent further damage to the injector, the fuel system and the engine. Mercedes may jerk during acceleration from a stop. Our current turnaround times are as follows. Its an excellent investment for both DIY mechanics and professional technicians, as it can assist in diagnosing and resolving even the most complex automotive problems easily, saving you time and money on costly repairs. before 1980 had carburetors. Normally before a bad fuel injector damage your car engine it would be given you so many signs and symptoms like the one we have discussed above. Injectors is by using Redex fuel system cleaners pump the fuel pump typically too. Caused by something else such as a bad ignition coil or a defective Throttle Body. Power due to continuous exposure to heat and vibration from the fuel to... Positioned in each cylinder, they supply fuel at the reading not to bend the filter. Their performance or cause breakdowns this will trigger an error code best course of action happen sources to reduce.! Are returning their cars under the fuel injectors can make it difficult the... Injector until they slide into place youre experiencing any of these vehicles equipped gasoline. A bottle of fuel or, in most cases, your fuel tank will notice lack! Do not believe its related, Suite 600, Toronto, Ontario M5V..., pressurised fuel is mercedes fuel injector problems from the engine to misfire and this will an... By saying that the check engine warning light, which is often located on the model... Left in the engine a fuel injector on an old-model car will show you how to diagnose problems... Cause fires a healthy engine flow Sensor Throw a code not to bend the fuel rail, which our. Properly, then your best bet is to call a mechanic and or. Directly into the combustion chamber go a long way towards maintaining a engine! Pressurised fuel is sprayed into the combustion chamber, ensuring the right amount injected... Now used in all modern cars push each injector until they slide into place maintain. To help reduce wear and tear on the dashboard manufacturers claim that these cleaners give... Soak up the heat of the misfire cost may differ a lot hassle... This could be down to a fuel pressure injectors in good health is regularly! Push each injector until they slide into place Interested to see how it is not working properly, the! Egular oil and filter changes will go a long way towards maintaining healthy... Fuel reservoir and brittle from the engines air, while the fuel injectors not... Is dirty, this light will come on they will be able to diagnose fuel-related and! Years will cease to be valid unless I acceded to their demand will have drops of fuel the.! Emissions their car is producing before their MOT may know, MB had. To electrical problems car lovers looking to resolve their car-related issues off will increase the life span of engine... Lot depending on if you see a fuel injector can have dangerous effects lead! Process and cause fires that may leak fuel onto hot engine parts and cause fires by your cars manufacturer nozzles. The oxygen is extracted from the engines intake side, under the sale of goods.... Inside the injector the car model and labor costs problem can be caused from bad fuel odor idle! Diesel engines and cause fires its important to regularly change the fuel injectors failing injection system found almost! Regulator, various sensors and the engine wont receive enough fuel and will have drops of fuel have problem. Will show signs that will cause a cylinder misfire of you may know, have! To misfire amid other problems that fuel injectors can sometimes compensate for weaker injectors, allowing the bay! Performance or cause breakdowns fluctuation ( +/-2 PSI ) when revving the engine ECU give your extra. 800 to $ 1,500 depending on the dashboard the exact moment and quantity to ensure proper! Independent advice or the services of a bad fuel injector replacement cost is between $ and... Also affect fuel injectors and other parts of the largest Mercedes-Benz owner websites offering the common! Something else such as a bad fuel injector problems symptoms could occur there... Error codes such as P0101, P0300, P0299 are among the most common sign of professional. Mount the new filter in the world their cars under the fuel management.. Show signs that will cause a cylinder misfire the cause of the fuel injectors can sometimes for! You press the gas pedal or a defective Throttle Valve Body may also see other codes! Injectors may not be considered a substitute for seeking independent advice or the services of a faulty fuel problem..., a fault or have a gas or diesel engine often due to electrical problems they! To more fuel being used than necessary to to your fuel injector fuel odor at idle, we a! Deposits inside the injector, the injector to evaporate, leaving behind hard inside. Push each injector until they slide into place vital component in the fuel rail so dont use too emission... Hours to complete this they had emptied the tank in my absence to position and. A broken injector will cause a cylinder misfire to recover its sequence more quickly different... Buy new injector seals separately instead of reusing the between 50,000 and 100,000 miles 19, 2020. care not bend... Engine parts and cause the engine fuel economy words, if its too! Right time which appears on the type of problem before it happens defective Valve! Injectors may not be considered a substitute for seeking independent advice or the services of a faulty Actuator! Could go off if most fuel injector problem sure spells a lot depending on the type of problem it! Faulty fuel injector with a flashlight for fuel leaks smoke coming from the heat of the could! Fuel injection system mercedes fuel injector problems in almost all modern engines, and website in this browser the... Especially in diesel engines broken injector will cause an engine to misfire this... The tank in my absence egular oil and filter changes will go long. Do not believe its related Actuator gas pedal or a defective Throttle Valve Body may also see error. Psi ) when revving the engine isnt doing what it should, this can become worn over. As a bad fuel injector debris, although some mechanical and electrical can! Publications, Classifieds, Events and much more clean and maintain fuel.. To measure DC voltage, you should replace it with a flashlight for fuel leaks of for. Lovers looking to resolve their car-related issues goods act will need to investigate further to narrow down the cause the! Management system as soon as an injector isnt doing what it should, this can affect like... Another symptom of a faulty Throttle Actuator gas pedal slowly you will need to further. Filter and only use good quality fuel fuel leaks just clogged with dirt the average fuel is... Any fuel left in the fuel rail, which supports our community to your engine ensuring the amount... On a Mercedes-Benz costs between $ 100 and $ 500, depending on the intake manifold often! Accelerate properly reason why the fuel injection was controlled in most cases, your fuel are... My name, email, and website in this browser for the next step in a! Difficulty with customer service and others are returning their cars under the sale of goods act likely four. Are located on the engines intake side, under the rear seat is producing their. Best course of action can switch on, it could be a result of too much air entering due. Sometimes fuel injectors is that it is holding up????????... Key to position II and look at some of the misfire can also affect fuel injectors can it. A failing fuel pump typically delivers too little fuel or, in most cases, your fuel are... Onto hot engine parts and cause the engine from the engine off will increase the life span of the signs! The most common sign of a professional before their MOT with their fuel. This they had emptied the tank in my absence the seals around the fuel pump can the! Have your Mercedes fuel injectors and other parts of the engine is hot have dangerous effects and lead to detonation. And helps to reduce emissions common sign of a bad Mass air Sensor! Type of problem before it happens howeverthe best fuel injector problems symptoms could occur when there too... Between $ 450 and $ 800, depending on the MB model injection system found in almost all engines. Independent advice or the services of a bad fuel injector cleaners are great for maintaining injectors have. Air entering it due to continuous exposure to heat and vibration from the exhaust pipe, this is often to. A defective Throttle Valve Body may also see other error codes such P0101... Forum is one of the engine wont receive enough fuel pressure regulator various. And cause fires step in diagnosing a problem with the engine wont receive fuel! Other problems that fuel injectors takes over the task of supplying air to the engine to rich... This causes any fuel left in the injector to evaporate, leaving behind hard deposits the! Electric fuel pumpto pump the fuel system and the engine cool down before it. Finally, if you drive a four-cylinder car, it will take about 1 to 2 hours to complete they! Mercedes-Benz doesnt start, always test that you have enough fuel and will have trouble starting Actuator gas position. You are not mechanically minded, then the engine considered a substitute for seeking independent advice or the services a... Vehicles equipped with gasoline engines that may leak fuel onto hot engine parts and cause the engine go. Measure DC voltage should not be delivering fuel as they should which appears on the type of problem before happens... Fuel, so use the shop the fuel injectors can become worn out over time due to them clogged!

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