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

Engine is knocking (I think) experts inside please :)

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Old Jan 3, 2005 | 07:50 PM
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Default Engine is knocking (I think) experts inside please :)

When I start the car up, it sounds great for the first 3-5 minutes

After that, and the idle settles down to about 600 there's an intermittent knock - when its there, it knocks about 3 times every 2 seconds

Sometimes its there, sometimes its not. But when I rev it to about 3000 it sounds like clattering from the engine, but doesnt really get any worse.

Any ideas anyone?

Oh its not my vette, its my 88 Cherokee 4.0 straight 6 w/ 151k - i know this is CORVETTEforum but you guys always give the best advice
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Old Jan 3, 2005 | 08:17 PM
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Wristpin
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Old Jan 3, 2005 | 11:30 PM
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Lifter/Rocker Arm
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Old Jan 3, 2005 | 11:38 PM
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depends where its coming from...
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Old Jan 3, 2005 | 11:40 PM
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On a Jeep, I would say sticky lifter or rocker arm also...
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