Mercedes-Benz W124 E-Class Fuel Injector Replacement

If your car is starting to run rough, getting horrible gas mileage there is a good chance it is time to replace the fuel injectors. Modern fuel injectors are made of plastic. I do not recommend having them serviced or rebuilt. Older mechanical injectors opened by fuel pressure alone and were easier to service. Newer injectors are made of plastic, need an electronic pulse from the ECU to open and are better replaced than sending them out for service.
A properly working injector will send a precise amount of atomized fuel into the induction system at a designated time. A weak or improperly working injector can do everything from send no fuel, to leak raw, non-atomized fuel into your engine.
You're going to be working on the fuel system so have a fire extinguisher handy (and know how to use it). There will be some spillage of fuel as it's nearly impossible to prevent. Also, wear chemical resistant gloves if you don't want to get any gasoline on your hands. Make sure that you have plenty of paper towels or rags to help you clean up. Perform the injector removal in a clear, open, and well-ventilated space. It may not hurt to have an assistant around in case there are any problems.
You will need to remove the crossover air pipe before beginning. Please see our article on throttle body removal for further assistance. Note: the throttle body and resonance valve are missing in these pictures. You do NOT need to remove them for this job.
Read the Full Article:
www.pelicanpar...
Time: 4 hours
Tab: $20 to $270
Tools: 10mm socket:www.pelicanpar..., 15mm, (2) 17mm wrenches:www.pelicanpar..., 6mm Allen:www.pelicanpar..., pliers:www.pelicanpar..., flathead screwdriver:www.pelicanpar..., oil filter:www.pelicanpar... wrench:www.pelicanpar..., rags:www.pelicanpar...
Parts Required: New injectors:www.pelicanpar..., white lithium grease
Hot Tip: Check for flooded cylinders
Performance Gain: Better-running engine, improved fuel mileage
Complementary Modification: Replace worn out hoses:www.pelicanpar...
Applicable Models:www.pelicanpar...
Mercedes-Benz 260E (1987-89)
Mercedes-Benz 300CE (1988-93)
Mercedes-Benz 300TE (1988-93)
Mercedes-Benz 400E (1992-93)
Mercedes-Benz 500E (1992-93)
Mercedes-Benz E320 (1994-95)

[@Mousiee7sg]

Is there a tutorial for replacing the injectors on a M103 w124?

[@pelicanparts]

Applicable Models for this video: Mercedes-Benz 260E (1987-89) Mercedes-Benz 300CE (1988-93) Mercedes-Benz 300TE (1988-93) Mercedes-Benz 400E (1992-93) Mercedes-Benz 500E (1992-93) Mercedes-Benz E320 (1994-95) Mercedes-Benz E420 (1994-95) Mercedes-Benz E500 (1994) If you check the forums, someone may have shared photos there of the procedure. forums.pelicanparts.com/

[@geekygaki]

Is it important to release pressure after changing a fuel pump?

[@pelicanparts]

I don't know what you mean. Can you explain the procedure?

[@destinygarcia8993]

When I try to break the two fuel lines apart with a 15mm and 17mm it won't budge at all, the metal is beginning to scrape and bend. How can I break it apart?

[@pelicanparts]

They might be seized. Use line wrenches.

[@destinygarcia8993]

@@pelicanparts I'll try that, thanks!!

[@nikavacheishvili5670]

would be better if you took video instead of pictures and text

[@pelicanparts]

Thanks for the feedback.

[@jaredlemay9409]

This is fantastic. Thank you