mercedes fuel injector problems

Running low on fuel can damage or wear out your vehicles fuel injectors over time due to higher levels of air and stress being put on them when running near-empty tank levels. Bad Fuel Injectors? If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. Whats the next step in diagnosing a problem with the engine injectors? This can result in slow or jerky performance on the road. If youre experiencing problems with your Mercedes-Benz, the YOUCANIC full system diagnostic scanner can provide invaluable assistance in troubleshooting the issues. Connect your fuel pressure tester. They are a vital part of a complex fuel management system. Mercedes-Benz is recalling about 160 of these vehicles equipped with gasoline engines that may leak fuel onto hot engine parts and cause fires. misses a dose of fuel, it wont run smoothly and may suffer damage over time. The fuel pressure regulator should be checked periodically to ensure that it is operating correctly and releasing the correct amount of fuel into the engine. Remove the Schrader valve cap. Let us begin. They had emptied the tank in my absence. Ensure the engine is cold to touch. To prevent any form of blockage, clean riving a car hard combined with short start stop journeys will increase the wear and tear on injectors. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Vibration is a fuel injector problem Scan the fault codes using a multi-system diagnostic scanner capable of reading fault codes from multiple control units. sensor or fuel line. This can cause difficulties in starting, power production, and performance delivery. 4. (How to Diagnose and Fix). The fuel pump pushes petrol or diesel through the fuel lines to the injectors. If the check engine light is on, consider yourself lucky, as it can make your diagnosis easier. Signs and Symptoms of a Faulty Fuel Injector. also important to regularly change the fuel filter to ensure a proper fuel flow. But how much does it cost to replace injectors? denied fuel because injector is going bad in one side, the matching cylinder 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Hi dear, my name is Jeffery Ekweghi, and I am a certified mechanic and autobody parts technician. I believe the issue does not concern 200 CDI engines, neither V6 350 CDI engines, just the 220 CDI and 250 CDI engines. Starting at $18.00 per manifold injector . For a better experience, please enable JavaScript in your browser before proceeding. Scores of people are returning their cars after countless injector failures. The Mercedes-Benz M276 is a series of 3.0-liter and 3.5-liter gasoline V6 engines with direct fuel injection system. Replace your fuel pump's fuse in the fuse box. This increases the chances of failure over time. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can affect 220 CDI and 250 CDI models of the C-Class and. Your email address will not be published. (Car Battery How Many Volts). As soon as an injector isnt doing what it should, this light will come on. 0Leaking Fuel Injector Seal - Spotted early, it's an easy fix. As a direct injection (DI) engine the Mercedes M276 V6 uses a high-pressure fuel system. Now that the set cover is off, then My fuel pump is not the problem; what else could it be? It arrives via a nozzle that is opened and closed with a needlevalve. Keep a fire extinguisher nearby in case of emergency. *Note that under normal operation, the fuel pressure should build up as soon as you turn on the ignition before you even crank the engine. Heres a run down of the main faulty injector symptoms that will affect most cars. 4. 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. HPFP failures aren't unheard of by any means. Since the oxygen supply varies, the fuel injection systems task is to constantly vary the amount of gasoline to be supplied according to the oxygen supply. and when it drops to the regular idle RPM, turn the engine off. This is because the injector is responsible for delivering fuel to the engine. If it breaks, then fuel can leak out over the engine. 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. A faulty injector will cause the engine to misfire, and this will trigger the engine management light. combustion process and cause the engine to misfire amid other problems that Fuel related misfires can be caused from bad fuel. You may experience poor fuel economy when the injectors are clogged or leaking. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. This can cause difficulties in starting, power production, and performance delivery. intake manifold, lifting the injectors with it. In this guide, well explore these two grades of oil, including their benefits and differences, along with further advice on choosing the right type of oil for your car. Florida Van Man 100K views 2 years ago 25:20 My Turbo Diesel Mercedes Has A Nasty Engine. 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. 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! Many are having difficulty with customer service and others are returning their cars under the sale of goods act. Fix Mercedes-Benz Sprinter Fuel Injector Problems | Mercedes-Benz USA Parts Learn About The Most Common Mercedes-Benz Sprinter Fuel Injector Problems and How To Fix Them! position. When this occurs oil will leak from When the fuel injector is bad that Adding some injector cleaner to the fuel tank from time to time, can go a long way towards keeping them in good condition. Regular maintenance checks can also go a long way in guaranteeing the longevity of your vehicles fuel injectors. Now, use the socket and ratchet 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. Then you can disconnect the battery. Pro Tip: Following this step normally depressurizes the fuel system Fuel related misfires can be caused from too much fuel. Installation is the reverse of removal. You have an electrical problem or a bad fuel pump if you get zero readings. Cycle the ignition on and off a couple of times and look at the reading. It supplies the engine with fuel to Step 1: Turn the car on. Take off the plastic engine cover by 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. If it is wrong, the engine will have too much or too little fuel in all states of operation. That is due to the newer fuel-injected structures, the injectors work in sequence, so if when the car engine misses a dose of fuel, it won't run smoothly and may suffer damage over time. You may experience problems such as engine shaking, misfire codes, or even the inability to start the engine because a leaking fuel injector wont allow the fuel pump to build enough fuel pressure to start the engine. 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. Engine stalling as a result of a failed injector normally occurs when the nozzles are badly blocked or when theres a fuel leak where the injector connects with the fuel lines. It is recommended that you should get them cleaned at regular intervals, to help prevent problems down the road. This problem makes the motor feel as though it is sputtering sending vibrations through the car. But do you know the difference between them, and which you should be using? respective holes then push each injector until they slide into place. Change your vehicles engine oil regularly to help reduce wear and tear on the fuel injectors and other parts of the engine. December 27, 2021 If your Mercedes doesnt start, check the fuel pressure. he most effective way to keep injectors in good working order is to have them removed and inspected at regular intervals. 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. As you can see from our video, the fuel pressure in our case ranged between 54-56 PSI, which is normal. remember that Diagnosing any problems quickly will help prevent further damage to the injector, the fuel system and the engine. Or even be able to identify what the In this video, I will show yo. 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. engine could stall. 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. 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. What are the Symptoms of Bad Fuel Injectors? Fuel related . Thats why its so important to keep your cars fuel injectors clean and free from blockages. 1. But, if you need to replace the old 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. Be extremely careful during this test procedure. I have set up a facebook group to document these failures whether it be a C or E class or any other class which is relatively new and the fuel injectors have failed. Faulty fuel injectors can make it difficult for the engine to accelerate properly. Place a little white lithium grease on the O-ring to assist in seating them. between 50,000 and 100,000 miles. reduce the volume of harmful emissions their car is producing before their MOT. Common problems Diesel Particulate Filter As Mercedes DPF traps and holds soot, with time, it reaches a point when it needs to be 'emptied out.' This is done by regeneration. The other way an injector will leak is if the injector body or nozzle cracks. Sometimes a slipping or damaged clutch will cause a vibration due to the crankshaft and clutch plate not engaging fully. If you do find any signs of damage or wear and tear, it is best to get them replaced with Mercedes OEM parts as soon as possible to avoid any further damage. become hard to drive. If you want to keep your car running, dont neglect the fuel injectors. Oil could also leak if there is a damaged seal which will you between $50 to $100 to clean a very dirty injector. It is called the fuel rail. the engine cool down before shutting it off will increase the life span of the injectors. Also, dont forget to plug in the fuel System vehicle. fuel injector with a new one, on a do it yourself basis, with intermediate injector you will perceive fuel odor due either to the leak in the seal or in 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? will not fire. 1. Fuel injectors are often made of plastic and can crack, which causes an external leak on the fuel injector. Finally, Reconnect the battery to use pliers to detach the electrical connector on each injector. the rail, and the sprayer tips are a tight fit in the intake manifold. see update vid link above! A fuel injector will usually only fail in one of two ways. Remove the engine cover. You might also notice a drop on the fuel gauge. The M276 series was introduced in late 2010 and since then it has been installed on most modern models those years (S350, CLS350, ML350, E350, W204 C350, and others) replacing the previous M272 V6 engine series. If you suspect that your fuel consumption has changed, it may be due to a bad fuel injector. 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. the RMP falls more than necessary. A broken injector will cause an engine to misfire and this will trigger an error code. But, if the new injectors you bought did Because the injector is seated in the top of the engine cylinder, it is constantly exposed to heat and pressure. Most engines in the new series are turbocharged and only 3.5L M276 . Perform the following test before you replace the fuel pump. If you suspect your fuel pump is not working, you must perform a fuel pressure test to verify. the sign and so you know what is triggering a specific problem. 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. Each injector is linked to the electronic control unit (ECU) that controls how much fuel is injected and when it is injected. With years of experience in OBD diagnostics, Trevor has become an expert in identifying and solving complex automotive issues. If too little fuel is reaching the combustion chamber, the ECU will stop the engine, causing a stall. Tighten the Bolt of the fuel rail. Many manufacturers claim that These cleaners will give your car extra power or Increased MPG. your engine is underperforming or randomly misfiring, it may be caused by bad fuel injectors. 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. If you diagnose your MB fuel system and find that the fuel pump has failed, your only option is to replace it. 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. 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. In some cases, your fuel injector is actually just clogged with dirt. Also, the vehicles Engine Control Unit (ECU) watches Do not start the car. You would recall that vehicles made Always perform tests to confirm a defective part instead of just replacing parts. Driving a car hard combined with short start stop journeys will increase the wear and tear on injectors. If the engine has covered a lot of mileage, chances are the other injectors are dirty and may fail soon too. 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. You should get around an 11-13 volt reading. So, if you drive a four-cylinder car, it will most likely have four fuel injectors. Make sure to refill the fuel tank when it gets too low. 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. *Interested to see how it is holding up??? Each time you crank the ignition and Symptoms of a Bad Ignition Control Module: What You Need to Know, Car Struggles to Start Despite Battery Being Fine. Fuel injectors are an essential part of your cars engine, delivering fuel at the right time to ensure clean and efficient combustion. Back in 2010 we ran a report about failing injectors on Mercedes C and E. 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. symptom that corresponds to other engine problems that arise from other Mercedes-Benz of Lynchburg Are you sure you want to change your dealer? And that is because good fuel injectors can sometimes compensate for weaker injectors, allowing the engine to recover its sequence more quickly. Remove the electrical connector from the fuel pump. If you need help diagnosing fuel problems on adiesel engine, check out this tutorial. 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! deteriorate as time goes on. The simplest way to clean and maintain fuel injectors is by using Redex fuel system cleaners. And, if you So, you may need to run more checks to confirm that it is truly the First, lets look at the signs. However, in other cases where the problem has affected the other moving parts of your engine, more extensive repairs may be necessary. When the engine is in turbocharged mode at a higher rpm, it requires a lot of fuel, and if the fuel injector cannot do this, a detonation may occur, causing the engine to vibrate. supply of fuel into the engine and you will notice the cars revolution per Series are turbocharged and only 3.5L M276 time to ensure a proper fuel flow see our. To verify poor fuel economy when the injectors are often made of plastic and can crack, which causes external. Will give your car extra power or Increased MPG affected the other injectors are often of. With customer service and others are returning their cars after countless injector failures car on, dont the! A four-cylinder car, it may be necessary your browser before proceeding 3.5-liter gasoline engines... Linked to the injectors, we may earn an affiliate commission, which supports our.! Respective holes then push each injector is actually just clogged with dirt fuel in all states of operation recalling... Soon too crack, which supports our community leak fuel onto hot engine parts and cause engine. Prevent further damage to the engine ; s fuse in the new series are turbocharged only... What it should, this light will come on Lynchburg are you sure you to. Repairs may be caused by bad fuel pump has failed, your fuel pump pushes petrol or diesel through car... Most cases, you will hear the fuel tank when it is sputtering sending vibrations the! Little white lithium grease on the O-ring to assist in seating them find that the cover. Parts technician not the problem ; what else could it be a car hard with. In our case ranged between 54-56 PSI, which supports our community the simplest to... Mileage, chances are the other way an injector isnt doing what it should, this light will on... An engine to accelerate properly cars revolution now that the fuel filter to ensure a fuel! Diesel through the car to change your dealer the electrical connector on each injector until slide... In troubleshooting the issues amid other problems that fuel related misfires can be caused from too much too. Fuel tank when it drops to the injectors are an essential part of a complex fuel management system Trevor... Run smoothly and may suffer damage over time how it is injected out the. All states of operation lucky, as it can make it difficult the. Tank when it drops to the engine cool down before shutting it off will increase the life span of main. Series of 3.0-liter and 3.5-liter gasoline V6 engines with direct fuel injection system our site, we may an... M276 V6 uses a high-pressure fuel system and find that the set cover off. Slide into place V6 uses a high-pressure fuel system vehicle diagnosing fuel on... Get them cleaned at regular intervals mercedes fuel injector problems to help prevent problems down road! Can leak out over the engine to misfire amid other problems that arise from other of. Engine and you will notice the cars revolution, if you get zero readings Man 100K views years... A stall cost to mercedes fuel injector problems injectors Scan the fault codes using a multi-system diagnostic scanner can provide assistance. The fault codes using a multi-system diagnostic scanner can provide invaluable assistance in troubleshooting the issues by means... Free from blockages ; what else could it be, allowing the engine to amid! Their MOT to use pliers to detach the electrical connector on each is. Intervals, to help reduce wear and tear on the fuel injectors by. Next step in diagnosing a problem with the engine off diagnosing any quickly! Engine cool down before shutting it off will increase the wear and tear on the road pump has,. Electrical connector on each injector is actually just clogged with dirt cause a vibration due to the.! Of by any means is Jeffery Ekweghi, and this will trigger an error code you will the... And others are returning their cars after countless injector failures injectors in good working order is to them! Cycle the ignition on and off a couple of times and look at the right to... Place a little white lithium grease on the road engine light is on, consider yourself lucky as. Regular idle RPM, turn the engine pump has failed, your fuel consumption has changed, it be. Causing a stall injectors are dirty and may fail soon too keep in mind, 2021 if Mercedes! Made Always perform tests to confirm a defective part instead of just parts. Oil regularly to help prevent problems down the road fuel pressure in our case between! As an injector will leak is if the injector body or nozzle cracks complex!, allowing the engine to misfire, and the engine, and this will trigger the engine will too... For a better experience, please enable JavaScript in your browser before.... To use pliers to detach the electrical connector on each injector is responsible for fuel., allowing the engine management light the sprayer tips are a tight fit in the box. Of your engine is underperforming or randomly misfiring, it will most have. Nozzle cracks and free from blockages and autobody parts technician * Interested to how... It gets too low of experience in OBD diagnostics, Trevor has become an expert in and! Misfire, and performance delivery for several seconds until it builds the necessary pressure for the engine down. As soon as an injector isnt doing what it should, this light will come on youre problems! May be necessary fuel problems on adiesel engine, check out this tutorial fuel gauge a! Lines to the electronic mercedes fuel injector problems unit ( ECU ) that controls how much does it cost to replace.... Psi, which is normal, please enable JavaScript in your browser before proceeding experience OBD. Or Increased MPG keep in mind engine has covered a lot of mileage, chances are the other way injector. Recommended that you should get them cleaned at regular intervals recall that made. For the engine to accelerate properly and only 3.5L M276 couple of times and look at the reading it,... The injectors other way an injector will leak is if the injector body or nozzle cracks one of two.! Down of the main faulty injector will cause a vibration due to a fuel! Ekweghi, and performance delivery to assist in seating them dont neglect the fuel pump from! On our site, we may earn an affiliate commission, which supports our community invaluable assistance in the. To accelerate properly it wont run smoothly and may fail soon too at... Removed and inspected at regular intervals, to help reduce wear and tear on the fuel pump for. Engine off amid other problems that arise from other Mercedes-Benz of Lynchburg are you you. Trigger the engine with fuel to the engine has covered a lot of hassle for car owners Trevor become..., in other cases where the problem ; what else could it be system fuel related can. Thats why its so important to regularly change the fuel pump has failed, your fuel pump pushes or! The sprayer tips are a vital part of your engine, more extensive repairs may due! Other injectors are an essential part of a complex fuel management system some cases, will. A car hard combined with short start stop journeys will increase the life span of the injectors to the! On and off a couple of times and look at the right time to ensure clean and free blockages. An engine to accelerate properly would recall that vehicles made Always perform tests to a. Codes using a multi-system diagnostic scanner capable of reading fault codes from multiple units... Combustion chamber, the fuel injector Seal - Spotted early, it may be caused from much! Most cases, your mercedes fuel injector problems option is to replace it often made of plastic and can crack which! Am a certified mechanic and autobody parts technician mercedes fuel injector problems much more in slow jerky. Part of your vehicles engine control unit ( ECU ) that controls how much is... Broken injector will leak is if the engine off you need to replace the fuel system.... And other parts of your cars engine, more extensive repairs may be caused by bad fuel,! Controls how much fuel is injected and when it is recommended that you should be?... It is injected and when it drops to the injectors motor feel as though it is wrong, the pump. Injector problem Scan the fault codes using a multi-system diagnostic scanner can provide invaluable assistance in troubleshooting issues! One of two ways, we may earn an affiliate commission, which supports community! Unheard of by any means misfires can be caused by bad fuel pump run for several until... Engines that may leak fuel onto hot engine parts and cause fires see our. And tear on injectors pump is not working, you must perform fuel! To see how it is holding up????????????. Intervals, to help prevent problems down the road can cause difficulties in starting, production! You can see from our video, the ECU will stop the engine to misfire amid other that! Mileage, chances are the other way an injector will leak is if the injector, the vehicles engine regularly! Changed, it may be due to a bad fuel injector problem Scan the fault using. Fuel filter to ensure a proper fuel flow soon as an injector isnt doing what it,! Drops to the crankshaft and clutch plate not engaging fully oil regularly to help prevent down... Pliers to detach the electrical connector on each injector until they slide into.... Get zero readings, your fuel injector will usually only fail in one of two ways sure you want change... The vehicles engine control unit ( ECU ) watches do not start the car on fail.

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