Engine Mechanical problem
1981 Mercedes Benz 300sd 4 cyl Two Wheel Drive Automatic 200000 miles
I purged the lined with the plunger, no effect. I have noticed that if a disconnect the fuel line in, rifgt at the plastic fuel pre-filter, no fuel is pumped. I do not hear the fuel pump with the key on or when the car cranks. Shoud I hear it? Fuel does seem to pump out of the injector pump though. I suspect the fuel pump. Am I missing anything?