LT1-LT4 Modifications 1993-97 Gen II Small Block V8

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Old Dec 5, 2008 | 10:26 PM
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From: Edmond, Oklahoma
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i have a 94 camaro and it is making a popping sound through the driver side exhaust at idle when it is warmed up. if i let it set for a while and start it up it doesn't do anything but if it is warm and i turn it off then start it back up it will backfire. also when i'm driving and let off the gas it will make a backfire sound. i've already changed the optispark cap and rotor. I would appreciate any suggests u have.

Thanks
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Old Dec 5, 2008 | 10:40 PM
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Sounds like the Exhaust Manifold Gasket needs to be changed.
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Old Dec 5, 2008 | 10:56 PM
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alot of lt1s will pop a little when you let off the gas, but if it's happening all the time it could be a different issue.
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Old Dec 5, 2008 | 11:01 PM
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if it is a exhaust manifold gasket would you hear it through the whole exhuast pipe or just up by the block, b/c i dont hear it where the gaskets at.

And it has been doing it all the time when i let off the gas.
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