Questions & Answers for: GMC Sierra how do i adjust the carbs

...and pistons raising the compression ratio for the car and causes the computer to not be able to adjust the timing to allow the car to run at it's best performance so removing the carbon and gum ...

1979 sierra grande runs too righ even after adjusting carb 1979 sierra grande with 454 runs too rich even after carb adjusted to run lean. gas vapor coming out of tail pipe You may have an internal ...

i need to adjust my qcarb on 1985 gmc-pickup two wheel drive . i need to know what evey screw does this truck doesnt have a carb, this has a throttle body, its fuel injected,there are no ...

I have a high idle and the computer hasnt thrown a code. How do I fix this or what all could it be? I also hhave a sunpro tach and dont know what to hook it up to....? if u own a 1989 sierra u dont ...