booker104

hi this is my first post and first mercedes,a e320 wagon i would like to clean the fuel injectors with my otc system in order to do this i need to know the following information how to
shut off fuel pump probably by removing the fuse
stop fuel from entering the return line back to the tank
know what pressure the fuel system runs at
any help would be greatly appreciated thanks for your time

Plutoe

Who and why were you told that you have to clean your fuel injectors? It wasen't the "dude" was it!!!

saintz

Do you have a specific problem?

For general maintenance, Mercedes recommends Chevron Techron fuel system cleaner. Just pour it in the gas tank. You can find it at Walmart or auto parts stores.

booker104

this car has 215,000km and at idle it is a little rough my first move is to change the fuel filter,air filter and spark plugs and see if it changes i was just going to clean the injectors so i know they were in good shape just because i have no service history beyond 134,00km .i had a truck with the same problem and i was going to sell it then i cleaned the injectors and i ran like new
i just like creating my own service history and by changing these items that will be my starting point if you guys think that the techron cleaner is best i will add some in the tank please feel free to let me know anything else that you think i should be doing it greatly appreciated i have to fix r side cv boots and the l side outer tie rod and tune up the car drives nice and i really love it once these things are changed i'll be happy unless the idle problem still exists
i have ordered my parts from autohaus they should be here later next week ill post my results after the change thanks again i appreciate any advice you can offer

tunayballa

You can run a bottle of Seafoam with a half tank of gas. Run in until the empty light comes on.

Done.

Musikmann

The things you are replacing are all a good idea at that mileage. Ditto to Chevron Techron Concentrate (MB even approves of that). Good luck!

booker104

i just put in new plugs and ran the sea foam cleaner in the tank the napa didnt have techron the car seems to run much better the old plugs were in ok shape but were probably due to be changed i cleaned the throttle body as well i also changed the idler pulley and the serpintine belt as well as front cv boots havent driven the car yet as i also am changing the outer tie rods but the wrong ones came from autohaus so my new ones wont be here untill mar 16th
i will be changing all the fluids as well any suggestions for transmission oil
if i have any drivability issues i will repost thanks all your help is greatly appreciated
booker

Musikmann

Transmission oil from autohausaz or a dealer. Ask for what was originally in your car, not the newest that MB recommends for the newer 7-speed.