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

94 Corvette running bad !!

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Old Jan 28, 2009 | 08:24 PM
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Default 94 Corvette running bad !!

well , i got a 94 corvette with 90,000 that is skipping , i have replaced the plugs and the wires ,when changed the wires it got slightly better the only thing that has not been replaced is the distributor on the front of the motor im thinking that's the problem. it doesn't appear to be steaming or anything so its not the motor .

Last edited by mark91; Jan 28, 2009 at 08:26 PM.
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Old Jan 29, 2009 | 12:08 AM
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That is probably is your problem. Mine died around 80k and thought it was the wires. Change the optispark and water pump at the same time

Also check for codes. If you got H16 or H36 your out of luck.
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Old Jan 29, 2009 | 01:44 AM
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is it a regular or irregular skip? meaning is it rythmic( like the engine is missing a cyl) or occasionally? whats the fuel pressure like? any codes? any odd smells from the exhaust?
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Old Jan 29, 2009 | 12:20 PM
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I'd check the fuel pressure to each injector. One bad injector will make it run like crap. I'd sure wouldn't want to change out an opti only to find it's something much easier and cheaper.
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Old Jan 29, 2009 | 01:08 PM
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Also, check your coil and test your ignition control module (ICM). Mine exhibited a light miss at idle about two weeks before it went ****-up on me, resulting in an immediate crank, no-start condition.
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Old Jan 29, 2009 | 07:17 PM
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Originally Posted by kawijames
is it a regular or irregular skip? meaning is it rythmic( like the engine is missing a cyl) or occasionally? whats the fuel pressure like? any codes? any odd smells from the exhaust?
it is rythmic but i don't know what the fuel pressure is , there are no codes , it smells like unburned fuel .
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