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#1
09-04-2012, 09:23 PM
Hummer Authority
Join Date: Sep 2003
Location: Canada
Posts: 1,251
Re: P0302 Engine Code
Low compression, sunk valve seat, carbon build up on valves, excessive leak down in that cylinder, weak lifter
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
#2
09-05-2012, 11:25 AM
Hummer Veteran
Join Date: Aug 2009
Posts: 68
Re: P0302 Engine Code
I had the same issue few years back turned out to be dirty injectors on numbers 2 and 7. I Replaced those 2 injectors cleaned a bunch of sand and debris from the fuel rail and all was well.
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2005 SUT Used and Abused, you name Ive broke it!
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