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Old January 21st, 2007, 06:45 PM   #19
Gr8wht2000GMC
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i wil definately try removing exhaust as this has crossed my mind as well...i will also try the o2's unplugged even tho they are only a week old...no luck with spraying carb cleaner around intake....i tore the whole top plenum off today and replaced upper gaskets.. no evidence of any intake leaks top or bottom...replaced a suspect vac line from egr to purge canister . in fact if i remove the air filter and put my hand over the tube it tries to pull my fat ass in and the truck dies instantly so i cant see any excess unmeasured air contributing to this prob. the only other thing i havent explored yet is the fuel rail and injectors. but i dont know what to even suspect on an injector, much less 8 of the things.
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