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

put on new head gasket, hear wierd sound when hand turning.

Old 08-25-2013, 12:46 PM
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rithsleeper
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Default put on new head gasket, hear wierd sound when hand turning.

Just curious, sounds like rice crispies crackling after I put the right head back on. It happens when I turn engine by hand to adjust the valves.... spark plugs are still out or I'd say it was air working its way out. The sound happens for a while after I stop turning also, not just while I'm turning..... everything is torqued down. Any ideas (not worried, just curious.)
Old 08-25-2013, 04:50 PM
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383vett
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Air doesn't make crackling noises when it's escaping a motor. I don't know what it is but I would be worried.
Old 08-25-2013, 06:06 PM
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gerardvg
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Originally Posted by 383vett
Air doesn't make crackling noises when it's escaping a motor. I don't know what it is but I would be worried.

Should just make hissing sounds, but as long as it turns over without much resistance you should be ok as long as the valve lash is correct.
Perhaps check the compression is ok that means the valves are seated if no compression the valve lash is too tight.
Old 08-26-2013, 12:15 AM
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Cliff Harris
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You left a candy wrapper in a cylinder? ;-)

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