M119 engine problems


  • M119 KJET EFI kit (500SL)
  • Mercedes-Benz W124 (1984-1997)
  • Mercedes M119 engine
  • Mercedes M119 Tuning
  • Mercedes M113: Everything You Need To Know
  • M119 KJET EFI kit (500SL)

    The fuel pump is located in the fuel tank. It pumps the gasoline from the fuel tank to the engine. In this tutorial, we will show you how to diagnose fuel-related problems and perform a fuel pressure test on Mercedes gasoline engines.

    If you need help diagnosing fuel problems on a diesel engine, check out this tutorial. Mercedes Fuel Pressure Test Instructions If you suspect that your fuel pump is not working, you need to perform a fuel pressure test to verify.

    A fuel pressure check on your Mercedes-Benz will tell you if the fuel pressure is withing range or not. For this test, you will need a fuel pressure gauge. If fuel falls on hot engine parts, you may cause a fire. Keep a fire extinguisher nearby in case of emergency. Never carry this test if the engine is hot. Remove the engine cover. The engine cover can be pulled up as it is held in place with four tabs and no screws. Step 2 Locate the fuel test port on the fuel rail.

    If you have a hard time finding the fuel pressure port Schrader valve on your Mercedes, start from one of the fuel injectors and follow the fuel rail. Step 3 Remove the Schrader valve cap. Connect your fuel pressure tester. Step 4 If you turn the ignition ON the fuel pressure should build up, before you even crank the engine.

    Try starting the motor and get a fuel pressure reading. As you can see from our video, the fuel pressure in our case was ranging between PSI which is normal. Watch the video for more details. Troubleshooting Mercedes Fuel Pump Problems A bad fuel pump can cause: engine no start condition or poor engine performance. Typically problems related to the fuel pump and fuel pressure include: loss of power engine sputtering at high speed engine not starting engine stalling problems starting the car Under normal operation conditions, the fuel pump provides a constant flow of fuel.

    A failing fuel pump typically delivers too little fuel from the gas tank or in certain cases too much. Mercedes-Benz cars use an electrical fuel pump to pump the fuel to the fuel injectors. Test 1: Fuel Pump Hearing Test A simple way to check if the fuel pump is working is to turn ignition to position II all dash lights will turn on.

    Do not start the car. As soon as you turn the ignition on, listen carefully by the rear seat near the fuel tank. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. The first thing that you should do is check the fuel pump fuse. If the fuse is good, you will need to test the fuel pressure. Perform the following test before you replace the fuel pump.

    Check fuel pump relay Check the fuel pump relay. You can either test the relay if you know how to or you can swap it with the same relay from a different system. Next, we want to make sure that power is going to the fuel pump. It is very common that for various reasons power is not going to the fuel pump.

    This can be a damaged electrical wire issue or the Engine Control Unit not powering the fuel pump for various reasons. How you to check if the fuel pump is getting power. Get a hold of digital multimeter. Locate the fuel pump. In most cases under the rear seat. Remove the electrical connector from the fuel pump. You will have to remove the metal cover to access the top of the fuel pump. Set you digital multimeter to volt setting and connect it to the two main black and red lines going into the fuel pump.

    Turn the key to position II and look at the reading. You should get around volt reading. Note that when you turn on the ignition, the fuel pump gets voltage for about 5 seconds to prime the system. Cycle the ignition on and off a couple of times and look at the reading. If you are not getting around 12 volts at the two lines that feed the fuel pump, 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.

    If you change the fuel pump and it fails again soon a few months later, it is possible that you have a partially clogged fuel filter or a restriction in the fuel lines. Under such conditions, the fuel pump may draw excessive current and blow the fuel pump fuse. Note that a defective fuel injector eBay link can also be the root of many problems.

    Bad Mercedes Fuel Pump Symptoms Mercedes loses power when accelerating Symptoms include lack of acceleration when you press the gas pedal or vehicle trying to stall. The fuel pump is not providing the required fuel pressure to keep up with the engine demands. Mercedes may jerk during acceleration from a stop. Happen when you hit the gas pedal to the floor. The vehicle operates normally when you press the gas pedal slowly. The easiest way to pinpoint the faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner.

    If you are getting zero reading, you either have an electrical problem or a bad fuel pump. Note that not all faults will trigger the check engine light. Scan the fault codes using a multi-system diagnostic scanner that is capable of reading fault codes from multiple control units.

    Use Star Diagnostic scanner to perform a complete system scan. Replacement fuel pumps for Mercedes can be purchased online if you are looking to save money. Where to buy Mercedes fuel pump? This is a list of Mercedes fuel pumps for different MB models. Links to where you can buy Mercedes fuel pump are provided below.

    Mercedes-Benz W124 (1984-1997)

    The production of original fuel distributors and its components has been discontinued and it is unlikely that unused ones will be found on the market. Replacing them with used parts offered on the aftermarket may not be the solution to the problems that have arisen.

    The EFI kit offered by Elbe Engineering ensures better engine starting, smoother operation and significant fuel savings, especially if the original fuel system is worn out. The modern engine control unit allows very precise metering of fuel and igniting it at just the right moment — impossible to achieve with mechanical control.

    The EFI kit includes the latest generation wide band lambda controller with a sensor that regulates the fuel supply so that the fuel mixture is always optimal.

    The wide band lambda oxygen sensor excels the older and simpler narrow band oxygen sensor in resolution. The result is a more accurate fuel mixture, which technically means higher torque and lower fuel consumption. Distributor-free ignition system allows for any advance angle, at any time and RPM. Optimal fuel metering and highly accurate ignition timing yield to increased economy and performance. Depending on the car model, fuel savings may reach 2 to 2. The installation of the EFI kit offered by Elbe Engineering does not require any modifications to your car.

    Just remove the old system, replace it with new one and turn the key. The installation of our EFI kit makes these older cars more easy to drive, more economical and less polluting than before. There is no need to worry about starting the engine or operating the car in different modes.

    Also, the kit offers the possibility to make a quick diagnosis or read engine parameters via Bluetooth using an Android device. Shipping information Orders are usually packed within business days and handed over to DHL Express carrier. The delivery time is usually business days, depending on your location and the chosen delivery type. Only 2 connections to chassis side — RPM output bolted and ignition power pin into original OVPR over voltage protection relay socket and done!

    Other changes in this engine include: A restyled fuel system A dual-pipe exhaust system with switchover valve and larger diameter tailpipes for reduced exhaust gas back-pressure Revamped engine management system Optimized cylinder heads A twin-spring assembly for the valve train to increase maximum engine speed to 6, RPM A revised oil supply system sump, catch tray, and pump and a separate oil cooler in the right-hand wheel arch Forged connecting rods Redesigned pistons Reinforced crankcase with stiffening ribs and side bolts Many AMG enthusiasts argue that the MK was the last of the excellent Kompressor engine used, excluding the Mercedes SLR McLaren.

    And unfortunately, Mercedes-AMG replaced this model with the new naturally aspirated 6. Even though the 6,2 L M engine has a higher peak power, many were disappointed by the lack of decent torque in the new design.

    With that being said, if you desire to have additional mod or tuning, you can do it by upgrading your camshafts. This change dramatically enhances the HP and the torque.

    Mercedes M119 engine

    You can also throw in some exhaust performance parts and flash the ECU. Problems Surrounding M Engines Apart from being the top-notch engine that Mercedes produced, it is also one of the best in the industry. Impressive as it is by the numbers. However, even those praises do not make the M a perfect engine, so it has some weaknesses and issues that you might encounter with this engine.

    The supercharged version, 5. As such, this issue only affects higher-performance machines. A brief description of the intercooler is that intercoolers are responsible for cooling pressurized air. Without intercoolers, the intake air temperature will rise drastically and prompts the computer to disable the supercharger.

    The issue with M is the failure of the intercooler pump. If the pump fails, it causes the intercooler system to run under the capacity or shuts down. When this happens, the intake air temperature rises and leads to worse engine performance. Once the air got too hot, the computer will shut down the supercharger. The next issue focuses more on the effects of the age and mileage of the M engine — oil leaks.

    Mercedes M119 Tuning

    However, this is not exclusive to the M as it affects many machines. The rubber seals and gaskets deteriorate over time and begin to crack, which happens at the M rear main seal. The rear primary seal main purpose is to seal the crankshaft where it connects to the transmission.

    When cracks develop, the oil began to leak, which becomes worse and worse. The EFI kit includes the latest generation wide band lambda controller with a sensor that regulates the fuel supply so that the fuel mixture is always optimal.

    Mercedes M113: Everything You Need To Know

    The wide band lambda oxygen sensor excels the older and simpler narrow band oxygen sensor in resolution. The result is a more accurate fuel mixture, which technically means higher torque and lower fuel consumption. Distributor-free ignition system allows for any advance angle, at any time and RPM. Optimal fuel metering and highly accurate ignition timing yield to increased economy and performance.

    Depending on the car model, fuel savings may reach 2 to 2. The installation of the EFI kit offered by Elbe Engineering does not require any modifications to your car. Just remove the old system, replace it with new one and turn the key. The installation of our EFI kit makes these older cars more easy to drive, more economical and less polluting than before.


    thoughts on “M119 engine problems

    • 13.08.2021 at 08:45
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      Certainly is not present.

      Reply
    • 17.08.2021 at 00:39
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      Here there can not be a mistake?

      Reply

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