Mercedes-Benz 300-Class - Recent Questions, Troubleshooting & Support - Page 3

There is plenty data on the internet just Google it . There are plenty of clubs around get some advice before you do this.

1. whoever opened your pump obviously did not have the necessary knowledge call ''ROVAN DIESEL'' AND ASK FOR HELP. Tell them what you did and ask for help and next time make sure the mechanic you use has a diesel license.

run the fault codes it is a fuel supply problem---dirty injectors , fuel filter . fuel pump, fuel pressure regulator , EVAP canister venting problem

i think the problem is in the fuel line. i have encounter it too.. the best way is to replace all fuel filter. muzzo have 3 fuel filter. 2 located at the engine and the other one located at the fuel tank they called it as strainer. u can see the opening of the tank underneath the back seat of the car. also good suggestion clean the tank. duel dirt is the main cause of your problem cause muzzo have only a small tip that why only little dirt can cause plunging in engine. sory for bad English

Check your fuel filter, fuel pump, etc. What temp/where are you? Cold weather may gel diesel fuel or biological contamination in the tank/fuel system. Be very careful with diesel fuel lines..high pressure can inject through skin. Some people have used starting fluid but too much can be bad for head gaskets....

wash the engine and after it's dry, park over some cardboard. look for the area of the leak to start narrowing it down. Once you figure out what area the leak is roughly coming from, jack the car up and have a closer look.

check the torque converter clutch servo/ solenoid operation

Hi,just go on u-tube and type in mercedes 300sd door lock vacuum pump repair,it shows you how to test and also to test the door actuaters,hope this was some help all the best.

Fuse gone check check wiring and make sure you use proper bulbs