engcogod

My buddy has a 1994 dodge 2500 diesel, w/ an auto transmission, everything stock except he has the silencer ring removed & the star wheel turned in for a little extra power. He has it turned to just where it barley smokes.

A few years ago one of his injection lines was leakingat the top of the pump, and the shop he took it to wanted to replace the injection pump. Well he didn't want to pay the money so they put a washer on one on the injection lines and ever since that the truck has a slight vibration at idle, but it gets a lot worse around 1000 rpm. Then above 1000 it stops...

A few months ago he replaced his fuel filter, and when he was manually priming the system, he heard a loud hissing noise.. Well he started his truck & the vibration was gone. But a Day or Two later it came back. Is there a piece of dirt in there or something else?

Thanks for the Help...

turbo thom

Sucking air. That's it.

..Preston..

gunracer1

i would swap out the overflow valve also

engcogod

Thanks Guys, I will pass the info along to him....Also where exactly is the overflow valve again....

infidel

Bottom left in this picture is the oil fill cap