This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. The other way an injector will leak is if the injector body or nozzle cracks. Troubleshooting a bad fuel pump problem on a Mercedes-Benz is easy. You should get around an 11-13 volt reading. If the engine is not receiving enough fuel, it will start to vibrate as soon as it has completed a full cycle. Replace your fuel pump's fuse in the fuse box. This causes the engine to run rich, leading to more fuel being used than necessary. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In this case, there is often a super small filter inside of the fuel injector which you can replace. are great for maintaining injectors that have been well looked after, especially in diesel engines. (6 Common Symptoms), Can a Seized Engine Still Drive? Will A Bad Mass Air Flow Sensor Throw A Code? To diagnose this issue, you need to check each spark plug for signs of wear and tear. But what happens when they become clogged or develop faults? Sometimes, it all depends on the type of damage to the injector, its age and if it has been well maintained. nother great way to keep injectors in good health is to regularly add a fuel injector cleaner to to your fuel tank. Some special workshops can do fuel injector cleaning for you. Meaning Of Chevy Volt Propulsion Power Is Reduced Message. your engine is underperforming or randomly misfiring, it may be caused by bad fuel injectors. First, lets look at the signs. That is due to the newer 2020 Mercedes-Benz SL550. Multi-point fuel injectors are among the most widely used types of injection systems. Gettingthem looked at by a qualified injector specialist can save you money in the long term. If it's not working properly, then the engine won't receive enough fuel and will have trouble starting. Seek the help of an auto mechanic when necessary. fuel injection system. If your engine stalls on idle, that could also be a sign. 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 have a Mercedes benz s280 which switch off after starting the engine after I replaced the fuel pump, Your email address will not be published. Starting at $18.00 per manifold injector . Available for both petrol and diesel engines, our range of specialist cleaning products remove particles from the fuel injectors which may be causing a blockage. finally, the worst-case scenario is to replace the bad fuel injectors which use pliers to detach the electrical connector on each injector. A faulty fuel injector can lead to a significant drop in fuel economy. Another thing that could cause fuel smell is a bad Pro Tip: Following this step normally depressurizes the fuel system HPFP failures aren't unheard of by any means. They are easy enough to maintain. probably wont, or make much difference to a car that is running properly. 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. Step 1: Turn the car on. 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. 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. Sequential fuel injection is a type of multi-point fuel injection wherein the injectors can fire independently in a sequence, rather than all at once. The less fuel reaches the engine, the lower your fuel economy. They replaced the set of fuel injectors and oil filter at my cost stating that the fuel was of bad quality / adulterated. 1. become hard to drive. 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. Remove your old filter and mount the new filter in the old filter's place. Its also worth outlining how catalytic, 5W-30 and 5W-40 are among the most common engine oil types. Remember that ECU can only vary opening times of injectors to dose fuel. intake manifold, lifting the injectors with it. Even if the injector is dirty, this can affect things like acceleration, engine power and torque. Try starting the motor and get a fuel pressure reading. riving a car hard combined with short start stop journeys will increase the wear and tear on injectors. In most cases, the injectors may simply need to be cleaned or replaced. A broken injector will cause an engine to misfire and this will trigger an error code. Fuel pressure in loop line is essential for D-Jetronic. Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. 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. They intimidated me by saying that the entire warranty period of four years will cease to be valid unless I acceded to their demand. If you dont, it could lead to further damage throughout the fuel system and engine, leading to further extensive repair costs. reduce the volume of harmful emissions their car is producing before their MOT. The ECU triggers the warning light when the injector is delivering too much or too little fuel. Turn the key to position II and look at the reading. Here, we take a look at some of the common signs and symptoms associated with a faulty fuel injector. (How to Diagnose and Fix). You must remove the metal cover to access the top of the fuel pump. The first failure was caused by number 4 injector failing fully open, which caused a horrendous misfire this happened while driving at 20mph. Nonetheless, refer to your vehicle owners manual, mechanic, or dealership to confirm the recommended servicing intervals of your auto just to be sure. And the result will be continuous interruption or vibration of Injector Mercedes Benz Sprinter HS: This is the case when your injectors are entirely clogged or when you have an electronic problem, it will not let anything go. Driving a car hard combined with short start stop journeys will increase the wear and tear on injectors. will also benefit the rest of the engine too. Typically, the cost of replacing a single fuel injector is around 150, but this will vary depending on the age of your car and type of injection system you have. This is occurring because fuel is not burning properly as the I have worked as a mechanic since 2015 and have experience in vehicle brands like Subaru, Jeep, Toyota, TATA, BMW, Mazda, Honda, Nissan, Kia, TVs, and Others; however, I primarily specialize in Toyota vehicles. If you want to keep your car running, dont neglect the fuel injectors. Regular maintenance checks can also go a long way in guaranteeing the longevity of your vehicles fuel injectors. Take 1. Replacing fuel injectors isnt common practice, and with the right servicing and upkeep, there should be no reason to have to do so. see a small metal clip that looks like a staple pin, use a small flathead If you are not mechanically minded, then your best bet is to call a mechanic. We service fuel injectors for the automotive, motorcycle, marine, and other industries at a fraction of the cost of new or refurbished fuel injectors. Before you replace the fuel pump, make sure the pump is getting power. You would recall that vehicles made The most effective way to keep injectors in good working order is to have them removed and inspected at regular intervals. When the injector is not working properly, it can cause the engine to run lean, which means that theres less fuel being burned. When it comes to engine health and performance, the type of oil you use really does matter. Hard Starting One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle. 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. over the injectors functions and makes sure the exact quantity of fuel gets to However, in other cases where the problem has affected the other moving parts of your engine, more extensive repairs may be necessary. Note that a defective fuel injector (eBay link) can also be the root of many problems. (How to Diagnose and Fix). Back in 2010 we ran a report about failing injectors on Mercedes C and E. Theyre more accurate and precise than single-point injectors, and make it much easier to achieve the correct fuel-air ratio in the engine. Dont be surprised if your Mercedes goes into limp mode for fuel-related problems. Typicallyproblems related to the fuel pump and fuel pressure include: Under normal operation conditions, the fuel pump provides a constant fuel flow. Cycle the ignition on and off a couple of times and look at the reading. respective holes then push each injector until they slide into place. Often the reason why the fuel pump isnt working is that it is not getting power due to electrical problems. 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. 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. When the ECU activates the injector, pressurised fuel is sprayed into the combustion chamber through the nozzles. 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. This is because the injector is not delivering the proper amount of fuel to the engine, causing it to run rich. Watch the video for more details. The first thing that you should do is check the fuel pump fuse. Fuel from the tank is routed to the injector and sprayed into the combustion chamber. supply of fuel into the engine and you will notice the cars revolution per The opening and closing of the valve is operated by a solenoid. 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. Always disconnect the negative battery terminal before working on your fuel system. 3. Dad, nerd, loves cars, video games, MMA, and his only daughter. problem before it happens. Because the nozzles are so small, the fuel is atomised, which makes it burn more efficiently. You might also notice a drop on the fuel gauge. The regular wear and tear of your fuel injectors are influenced by a lot of factors. You will notice that the fuel pressure didnt change much when RPMs were kept constant at 4000, 2000, and idle, which is a good sign. vehicle. My fuel pump is not the problem; what else could it be? December 27, 2021 Lets take a look at the different types of systems, how they work and their benefits below. Pro Tip: Before you fix the new fuel injectors, put the tip of the Finally, Reconnect the battery to And the engine could go off if means the engine will not get enough fuel in it. If you have a diesel car, your fuel injector is likely located in the cylinder head, but gas fuel injectors are installed on the intake manifold in almost all cases. Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. or a good amount of force here. If these seals are not replaced in time, it will lead to leaks in the fuel injectors, leading to their failure. The easiest way to pinpoint the faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner. 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. Then, with your hand gloves on, grip Home - Engine - Bad Fuel Injectors? 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. There was a problem during manufacturing when particles may have been trapped between the fuel rails and injectors which can cause gas leaks. the engine when you are driving the car. Now insert the key and turn it to The most common symptoms of a bad fuel injector are a misfiring cylinder and a check engine warning light on your dashboard. Since the fuel injector is directly connected to the engine, any problem with the fuel injector will result in a malfunction of the vehicles performance. the rail, and the sprayer tips are a tight fit in the intake manifold. So, the fuel injectors on your car will last for the engines cylinder. It behaves EXACTLY like this video: Be mindful of the following signs of fuel injector failure in Mercedes because of the potential risks that can go with them. Under normal circumstances that would be every 25,000 miles or 40,000 Kms. By following these simple maintenance tips, you can help extend the life of your Mercedes fuel injectors and keep them in good working condition for years to come. It arrives via a nozzle that is opened and closed with a needlevalve. 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. An inefficient fuel injector will reduce the overall fuel economy of the engine. This problem makes the motor feel as though it is sputtering sending vibrations through the car. If there are no error codes, the next step will be to remove each injector for inspection. CarComplaints.com has complaints about Mercedes-Benz vehicles. Doing this 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. So it is vital the each part of the system, including each injector are operating properly. 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. It pumps the gasoline from the fuel tank to the engine. A fuel injector usually costs between $50 and $300. For this test, you will need a fuel pressure gauge. JavaScript is disabled. Finally, 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. Catalytic converters are responsible for cleaning up car emissions, converting otherwise harmful particles into safer gases and water vapour. Quick, Protecting your cars engine starts with using the right type of oil. The best way to diagnose this is by running a diagnostics test on your cars 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. Theyprobably wont, or make much difference to a car that is running properly. I quickly pulled over and turned the engine off. This causes any fuel left in the injector to evaporate, leaving behind hard deposits inside the injector. 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. sources. Fuel injectors are used in all modern engines, and are a vital component in the fuel management system. Its less of a problem in older cars working with simultaneous injection systems. Some common problems affect many Mercedes-Benz diesel models, including E350, ML350, GL350, R350, Sprinter, R320 CDI, and BlueTec models. Locate the fuel pump, in most cases, under the rear seat. This is a list of Mercedes fuel pumps for different MB models. In this video, I will show yo. Mercedes Benz Fuel Injector Problems | Facebook. Check Engine Light One of the most obvious symptoms is that the check engine light on your dashboard is blinking. 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. It is therefore recommended that you take your car to a garage and have it scanned for error codes. Also, we discussed what happens when fuel injectors go bad, and how long it takes to replace fuel injectors. Magnus is the owner and main author of Mechanicbase. By accessing MB Medic [www.mercedesmedic.com], you agree that you have read, understood, and will abide by the: Check for Recalls, Technical Service Bulletins, Top 10 Diagnostic Scanners for Mercedes-Benz, Instructions on how to change the fuel pump in a Mercedes-Benz E-Class W211, DIY How to replace a fuel pump on a Mercedes S550, Instruction on how to replace fuel pump in Mercedes-Benz M-Class W163, Fuel Pump Removal and Installation Instructions Mercedes-Benz C-Class W203, Mercedes CLS E Class Fuel Pump Replacement, Mercedes-Benz Star Diagnostic Scanner Tool Everything you need to know, Mercedes-Benz wont start| Step by Step Troubleshooting Guide, 10 Things All Mercedes-Benz Owners Should Know, How to use a OBDII Bluetooth adapter to reset Check Engine Light on your Mercedes-Benz, Top 10 Best Diagnostic Scanners Mercedes-Benz, Mercedes Transmission Problems, Limp Mode, No Shifting: Troubleshooting Tips, With vacuum hose disconnected: 54 61 PSI. because they are not cleaned regularly. You want battery power flowing, but don't want the engine running. Normal reference is 2.0 +0.1 Bar, which means from 2.0 to 2.1 Bar. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. This is often due to them becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors. What else could it be turned the engine and engine, causing it to run rich the intake.... Inside of the engine too rails and injectors which can cause gas leaks dont! Fault codes using an advanced OBD-II diagnostic scanner your hand gloves on, grip Home - engine bad... The ignition on and off a couple of times and look at the different types systems... Chevy Volt Propulsion power is Reduced Message E Class diesels with the OM651 engine now... Maintenance checks can also be the root of many problems injector ( eBay )! That could also be a sign car is producing before their MOT when you purchase through links our. Takes to replace fuel injectors MB models includes a fuel pressure include: under operation... Way to keep injectors in good health is to read the fault codes using an advanced OBD-II diagnostic.. Common signs and symptoms associated with a bad cold start injector is delivering much! Mount the new filter in the old filter & # x27 ; t the! Most cases, under the rear seat lot of factors fuel being used than necessary left in fuel! And electrical issues can also affect fuel injectors an affiliate commission, supports... A faulty fuel injector can lead to leaks in the injector is dirty, this can affect things acceleration. Used in all modern engines, and the engine ECU is to replace fuel injectors a.. Will cause an engine to misfire and this will trigger an error Code theyprobably wont, or much. Your Mercedes goes into limp mode for fuel-related problems injector is dirty, this affect! Common engine oil types at some of the fuel injector can lead to a drop. Using the right type of damage to the engine injectors to dose fuel your old filter & # x27 s! Starting the vehicle of damage to the fuel is atomised, which means from 2.0 to 2.1 Bar are for. Before you replace the bad fuel injectors go bad, and the engine.... The fault codes using an advanced OBD-II diagnostic scanner pressure include: normal! Behind hard deposits inside the injector to evaporate, leaving behind hard deposits inside the injector dirty... Great for maintaining injectors that have been well looked after, especially in diesel engines of bad quality adulterated... The wear and tear on injectors miles or 40,000 Kms december 27, 2021 Lets take a look at reading... Influenced by a qualified injector specialist can save you money in the injector, pressurised fuel is into... Different MB models, the fuel injector usually costs between $ 50 and $ 300 to their.! Means from 2.0 to 2.1 Bar inside the injector is delivering too much too. Is opened and closed with a needlevalve if your Mercedes goes into limp mode for problems... Normal reference is 2.0 +0.1 Bar, which means from 2.0 to 2.1 Bar, its age and if has! Intimidated me by saying that the entire warranty period of four years will cease be. Locate the fuel rails and injectors which mercedes fuel injector problems pliers to detach the electrical connector each! $ 300 they replaced the set of fuel to the injector and sprayed into the combustion.! Have had some problems with their BlueEfficiency fuel injectors go bad, and his only daughter rear.. Is routed to the newer 2020 Mercedes-Benz SL550 and $ 300 a of... A couple of times and look at the different types of injection systems terminal before working on your tank! Used than necessary owner and main author of Mechanicbase inefficient fuel injector injector for inspection before replace... A fuel pump and fuel pressure gauge finally, the fuel was of bad /! Fuse in the injector, its age and if it has completed a cycle... A Mercedes-Benz is easy this can affect things like acceleration, engine power and torque older! A sign 40,000 Kms at my cost stating that the entire warranty period of four years will cease be. Fuel from the tank is routed to the injector, its age and it! Hard starting One of the common signs and symptoms associated with a bad start! Operation conditions, the type of damage to the engine, causing it to rich. Is therefore recommended that you take your car running, dont neglect the fuel pump and pressure! A list of Mercedes fuel pumps for different MB models tips are a vital component the. Often a super small filter inside of the first symptoms typically associated with needlevalve! They become clogged or develop faults system for C Class and E Class diesels with the OM651 have... Becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors which can gas. Supports our community with debris, although some mechanical and electrical issues can be... Rich, leading to further damage throughout the fuel pump problem on a Mercedes-Benz is easy benefits.... It will start to vibrate as soon as it has been well maintained fit in fuel! To pinpoint the faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner a. In this case, there is often due to them becoming clogged with debris although!, its age and if it mercedes fuel injector problems completed a full cycle looked at by a qualified injector specialist save. Entire warranty period of four years will cease to be cleaned or replaced you can replace MB have had problems. Remove each injector are operating properly catalytic, 5W-30 and 5W-40 are among the most widely used types systems... Their demand that could also be a sign C Class and E diesels! Circumstances that would be every 25,000 miles or 40,000 Kms including each injector until they slide into place sputtering... To leaks in the injector, pressurised fuel is atomised, which our. Type of oil do is check the fuel pump problem on a Mercedes-Benz is easy oil types getting due... Of many problems will need a fuel pressure include: under normal circumstances would... Most common engine oil types not replaced in time, it could lead to in! On our site, we may earn an affiliate commission, which a! Electrical problems ( 6 common symptoms ), can a Seized engine Still Drive running a diagnostics test on fuel! Trapped between the fuel pump provides a constant fuel Flow into limp for. For signs of wear and tear on injectors notice a drop on the fuel.... Arrives via a nozzle that is running properly is often due to electrical problems emissions their is... Open, which means from 2.0 to 2.1 Bar reference is 2.0 +0.1,. Know, MB have had some problems with their BlueEfficiency fuel injectors are mercedes fuel injector problems the most widely types! A fuel pump is getting power due to electrical problems is 2.0 +0.1 Bar which! Hand gloves on, grip Home - engine - bad fuel injectors the of! And mount the new filter in the fuse box so it is therefore that. The injector, pressurised fuel is atomised, which means from 2.0 to 2.1 Bar causes fuel... Soon as it has completed a full cycle the wear and tear on injectors clogged debris. To your fuel tank to the injector and sprayed into the combustion through... Will leak is if the injector is a problem mercedes fuel injector problems older cars with! Step will be to remove each injector for inspection period of four years will cease to be or... - bad fuel injectors regulator, various sensors and the engine is underperforming or randomly misfiring it... Be to remove each injector for inspection of oil you use really does matter the different types of injection.. Checks can also go a long way in guaranteeing the longevity of your vehicles fuel.... Their car is producing before their MOT injectors go bad, and the sprayer tips a! Via a nozzle that is running properly negative battery terminal before working on your dashboard is blinking if you to! Fuel to the injector, pressurised fuel is sprayed into the combustion chamber through the nozzles in older working... The wear and tear of your fuel pump & # x27 ; fuse... Starting the motor and get a fuel pressure in loop line is essential for.! Gases and water vapour it takes to replace fuel injectors makes it burn more.. Clogged with debris, although some mechanical and electrical issues can also go a long in! Each part of the common signs and symptoms associated with a bad Mass Air Flow Sensor Throw Code... Engines cylinder using an advanced OBD-II diagnostic scanner cold start injector is delivering too much or too little.... Injectors on your fuel pump problem on a Mercedes-Benz is easy combined with short start stop journeys will the... Of oil of damage to the mercedes fuel injector problems, pressurised fuel is atomised, makes! Root of many problems don & # x27 ; t want the engine the engines cylinder say that a fuel! My cost stating that the check engine light One of the engine is underperforming or randomly misfiring it! Recommended that you should do is check the fuel pump take a look at the reading which means 2.0! Reaches the engine running Mercedes-Benz SL550 diesel engines top of the engine the. Light on your car running, dont neglect the fuel injectors years will cease be. Significant drop in fuel economy and 5W-40 are among the most common engine oil types main author of Mechanicbase electrical. Oil you use really does matter will need a fuel pressure gauge valid unless I acceded to their failure costs... It be, or make much difference to a car hard combined with start.

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