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87 350tpi Starts fine! Hit gas pedal starts hesitating bad

Old Jul 8, 2010 | 07:57 PM
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rohan's Avatar
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Joined: Aug 2009
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From: Cape Coral, FL
Car: 1987 Camaro IROC-Z
Engine: L98 5.7 350
Transmission: 700r4
87 350tpi Starts fine! Hit gas pedal starts hesitating bad

87 camaro iroc 350 TPI has been sitting for a while. Replaced the MAF and fuel filter as car would not start right. With new MAF starts without issue, but if I press on the gas, it starts hesitating and will not rev, almost sounds like its backfiring... but if I lightly press on gas pedal revs build like normal.

What could it be? I tested the fuel pressure and its about 30-35psi.
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