isuzu npr turbo diesel help
#1
Staging Lane
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isuzu npr turbo diesel help
If there is any of you that is a diesel tech I sure could use help I'm working on a 1999 Isuzu npr turbo diesel on heavy throttle there is a loud grinding whine noise let off it goes away I'm thinking something to do with the turbo system. Before that happen it would make the noise letting off the throttle now its making noise on heavy throttle. Driving me nuts sorry if I confused any of you guys
#2
Launching!
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I am no expert, but it sounds like the bearings in the turbo based on the info you gave. Can you moce the impeller on the turbo much? They should be pretty tight. If it moves that can be a sign the bearings are going. Sometimes they will start to make grooves in the turbo housing.