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

04 duramax with power surg

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Old 11-21-2010, 11:11 AM
steve fisher's Avatar
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Default 04 duramax with power surg

all injectors ok, fuel pump checks ok, but sounds like its breathing. goes away when theres a load on it. can figure it out.
 
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Old 11-21-2010, 03:43 PM
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check regulator pump on the engine does it lope like a gas chevy enginw (like having a cam in it)...mine loped around and i had the pressure regulator replaced and it fixed it
 
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