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Old 11-30-2004, 06:20 PM
85Sierra 85Sierra is offline
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350 stumbling

The truck is a 85 sierra with a 350 4bbl,

now the problem just started to happen about a week ago, i was driving like normal and it started to really stumble like down low and its never done this before so what i though it may be was the carb being dirty so i changed the fuel filter and used some carb cleaner seemed to run smoother but didnt make a difference so i check to see if both jets were squirting and they dont miss a beat. So i thought maybe a dead plug? changed them all and didnt make a difference so im thinking maybe its a vaccum loss not 100% i checked alot of the hoses and there arent any with big cracks but i may be wrong

any ideas? its really pissing me off leaving work going up hill its just sick
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