I have a '95 Blazer when I rev it or start from a dead stop it sputter's up til about 3 grand on rpm. We changed the spark plugs and oil filter and oil that hasn't helped any. What could it be?
by 
RJShirley
ANSWERS: 4
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Fuel filter maybe or your fuel pump may be getting ready to go out. Mine done that right before it kicked the bucket.
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Man the possibilities are endless but it all depends cause my car does the same thing my gas pump a1 but it misfires on a cilinder so best thing get someone you know with a decoder and just ask him to chec it real quik for you youll save lots $$$$$
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If I were to change it, and it were to still to make that sound, what else do you think it might be?
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Possible internal fuel leak, check fuel pressure specs. Fuel regulator leak can be inspected by removing valve on top of plenum and looking for fuel leak in plenum when key is cycled to on. Also make sure you have the correct spark plug number, call other part stores. Also check wiring harness to CPI injectors
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