C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Question on fuel

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Old Oct 29, 2025 | 06:32 PM
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Daveb26
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Wondering if I can get some advice. Just got a 91 corvette convertible. I changed the fuel pump,plugs,wires,oil,air filter and im still having this problem. 1 the cat cranks but sometimes it take a little bit till it starts. When It's at idel it smooth and runs great give it gas it fine but when driving whe I get to about 45 I start to get like a bogging down or a rumble till I ease up on gas and proceed to give it gas slowly then it happens again in the 50s but when I give it gas fast it starts to bog down and kinda shake and rumble again I have to give it gas slowly and when I try to push it it's bugging down and rumbling the service engine soon light comes on. Any ideas ???
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Old Oct 29, 2025 | 08:07 PM
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From: LeClaire Iowa
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Did you change the fuel filter? Dan
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Old Oct 29, 2025 | 08:25 PM
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Originally Posted by Whaleman
Did you change the fuel filter? Dan
I am this weekend do you really think all this fuels problems im having can be as simple as a fuel filter.
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Old Oct 30, 2025 | 02:57 AM
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Originally Posted by Daveb26
I am this weekend do you really think all this fuels problems im having can be as simple as a fuel filter.
The symptoms you describe indicate possible fuel starvation so yes, a clogged fuel filter might be the problem.
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