sputtering problem

1995 GEO PRIZM
170,000 MILES
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NOVA66
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  • 1 POST
NO check engine light starts great everytime idles ok and it never stalls out. it revs up fine you put it in drive feather the pedal it runs fine. but when you push pedal in further it starts hesitating and breaking up bad like its loading up or running on few cylinders. ive tried plugs wires and dist. cap no improvement seemed like it ran better in cooler weather But that might be coincidence. dry or rain no change in performance. not sure what to do next don't want to spend lots of money and parts chasing after this problem.
Apr 26, 2013 at 11:24 AM
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HMAC300
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  • 48,601 POSTS
check your fuel pressure it may be low causing your problem. you might have to have a pro do this. fp should be 38-44 psi with key on engine off. also check yoru plugs if they haven't been changed in a long time gap should be .031"
Apr 26, 2013 at 12:07 PM