Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

Lb7 won't start

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Old Nov 16, 2014 | 02:42 PM
  #1  
Caleb C's Avatar
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Default Lb7 won't start

Ok I didn't have funds for new injectors. I was getting fuel in the oil. No missing or smoke. I pulled the injectors found blown o rings on the drivers side front two. I cleaned the injectors put a tiny bit of rvt on the threads re tightened them got new seals and o rings installed them. Rebuilt the filter housing. Primed cracked lines primed again. I can only get it to run a little with gas on a rag. I have been priming and cranking for several hours now. All fuses and connections look fine. Any body got a trick I haven't thought of
 
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Old Nov 17, 2014 | 02:06 PM
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2500HeavyDuty's Avatar
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the injectors are compression sealed, rtv wont do anything for ya. they are probably failed internally
 
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