LB7: Hard to restart after driving short distance

poolebarney14

New member
Jan 12, 2017
3
0
0
I have a 2002 Duramax LB7 engine 108600 miles. Over the last year I have had intermittent starting issues. I only have these issues after driving 15 miles or so and cutting the truck off and then trying to resart it 10 or so minitues later. The truck always resarts after priming the filter. Sometime s it starts after priming it once and sometimes I have to prime 2 or 3 times. This problem is not often and usually occurs 3 weeks to a month later then it won't start again, I will do the prime it will start and go another 3 weeks or or so and not start again. I just replaced the fuel filter head assembly 3 weeks ago plus the fuel lines coming from the filter assembly, but just yesterday it did the same thing not starting after driving 15 miles as I tried to restart it 10 minutes later . Has anyone had this same issue.



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JRein

Aircraft Mechanic's Hero
Sep 26, 2015
212
0
16
LRAFB, Arkansas
Assuming you don't have a lift pump, I've heard sometimes the lines soften and will suck themselves closed from the CP3

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