Quote:
Originally Posted by geroid
have 84 300d turbo it was getting sluggish so i put new injector nozzles in injectors it is much better power wise on highway but always a but . on idle engine shakes like its skipping engine did not have that issue before . i got inj pressures close to2000 psi . do inj pressure have to be exactly the same . i fitted monarc nozzles . anyone have idea why thats the case
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Do you have a nozzle tester/pop tester?
Since someone has already spoken about the injectors no need to repeat that.
Also, as the timing chain sketches, wears and gears wear the timing becomes retarded/late. Increasing the injector opening pressure makes the timing a slight bit later.
Adjusting the fuel injection pump timing normally takes care of that.
If you wanted to go deeper into it you can check the timing chain stretch and if that needs correcting with an offset woodruff key after that time the fuel injection pump.
Former owners of these cars often don't know that the valve clearances need to be adjusted. If they have been out of adjustment for a long time when they are readjusted, they need to be driving say 300 miles and the adjustment re-checked.
What does the see-through plastic filter look like? Are you seeing air bubbles moving through it? Is there any blackish greenish gray substance inside of the filter?
If you have one that can be taking apart the fuel pressure relief/overflow valve springs usually become compressed over time. The manual allows that you can remove the plug on it and take out the spring and the ball bearing that is used as a valve. You can stretch the spring till it has a free length of 27mm.
The one that you cannot take apart has a ball bearing pressed into it.