i have a '90 cummins, and when the truck is cooled off it starts right up, but after its up to temp and i shut it off it wont start, but if i let it cool off again it'll start up again no problem. anyone have any idea what it could be? i was guessing the starter, but thats jsut a guess thanks



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1990 Cummins regular cab, longbed, 250k, automatic

 

Sounds like the injection pump is worn out. Pour water over the pump when it won't start to confirm this.

 

If you are guessing a starter. Does that mean when its warmed up the engine wont crank. If so it could be the starter.
If it cranks and wont start then I would do what Wannadiesel said.

 

sry i didnt tell you all the problem, when i shut it off it wont start because it wont crank over till it cools

 

Ah, then it's the starter contacts most likely.

http://www.fostertruck.com/dodge/default.htm

 

nice link!!! I think that this should be put in to the "how to" link two
Goooood stuff