what are the major problems that people keep having in their chevy k5 blazers?

Asked by Jan 22, 2011 at 02:30 AM about the 1987 Chevrolet Blazer

Question type: Maintenance & Repair

my truck seems to keep having fuel problems it sprays into the injectors, but the truck acts like its not getting fuel i just changed the spark plugs and wires and it had gotten worse and dont know how to fix it.

3 Answers


it might be getting to much fuel.

1987,replace fuel filter,check fuel pressure at fuel rail,is this a throttle body clean with carb cleaner,carbon will build up around the butterfly or the flat piece in side causeing it not to close,if outer edge has a black ringe of build up on it that is the bigest prob,crank it,spray the heck out of it throttle it while cleaning,also clean replace mass air,you can get a can of mass air cleaner at any parts store.

Mine does the same thing. Ive replaced everything from the pump to the throttle body. One thing that did help was replacing the throttl positioning sensor.

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