Question about 1989 Chevrolet S-10 Blazer
I have a 1989 Chevrolet Blazer with a 4.3 TBI with 223,000 miles i just recently replaced the rear main seal and front and rear trans seals fuel pump, filter and injectors. the other day i put discount gas in it and it hasnt ran good ever since i put fuel system cleaner in it twice and yesterday i filled it up with exxon gas and its still acting up. its acting like its not getting gas and i have to let it warm up for about a good 20 minutes and it doesnt have a steady idle and when i put it in gear i have to constantly pump the gas to get it to go and it acts like its running out of gas it sputters but then after i drive it for about ten minutes it runs fine and i have to do the same routine everytime i start it up.....whats the deal?
I had the same problem with my blazer and it took me to completely rebuild the throttle body and put over $300 into the top end, new filter, and it still didn't stop. I finally dropped the tank and started to go through all the proper steps to remove the new fuel pump and i found that the rubber tube from the pump filter to the intake tube had a crack down the middle of it, replaced that and it ran perfectly fine. if that's not the case make certain that you didn't accidentally switch the small fuel lines like i did.(you'll notice that EVERYTHING smells like gas and you'll have fuel draining out of the charcoal cab emissions filter). hope that helps out a little bit!
Posted on Oct 23, 2008
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Posted on Jan 02, 2017
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Fig. 48: 1989 4.3L TBI engine - federal altitude
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