1986 300sdl Turbo
 

PLEASE HELP!!!
RUNS VERY ROUGH/DIESEL INJECTOR NOZZLES ARE NEW/PUMP TESTED OK/WHAT ELSE CAN BE WRONG? HELP,THANK YOU!

ZFCZEPHIR

Did the ELR connector at the back of the injection pump come off? Only affects idle.

Might need new delivery valve seals.

Check balance, check compression.

Is the upper radiator hose too stiff to pinch with your fingers when the engine's idling?

Is there pressure in the cooling system hours after you turn off the engine?

Sixto
91 300SE
87 300SDL
83 300SD

it is a 6 cyl? not the OLD 5 cyl...?


is the injection Timing Correct?


airbubbles in the fuel hose?