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

Sound coming from #8 area

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Old Aug 5, 2008 | 11:54 AM
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St. Jude Donor '06
Default Sound coming from #8 area

First it was barely audible, know it is getting worse. Sounds almost like a thumping sound, I had a exhaust leak back there after I put headers on.
Could it be a burnt valve and the pushrod is knocking into the rocker?
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Old Aug 5, 2008 | 12:04 PM
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Have you put an automotive stethescope to it? Could help you narrow down the problem.
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Old Aug 5, 2008 | 12:08 PM
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Pull 6 plug, and check the squeeze in the hole with a comp gauge. Then try the 8-hole.
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Old Aug 5, 2008 | 01:01 PM
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Randy93
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Never thought about stethescope,I will go get 1.
Cant do a compression test really weel, car has 175k miles and last time I checked, the compression was not to good on nbr 8.
Just thought about that, it the valve is stuck open a test would show that.
Thanks all!!!
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