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card in bike spoke sound on decel/closed throttle

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Old 11-05-2010, 06:14 PM
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Default card in bike spoke sound on decel/closed throttle

Car is a swap car so that certainly might explain it....


I've searched various ls1 forums and found a few possibilities for this sound, lifters, rockers, exhaust leaks, etc.

I wanted to post to see if there were any better specific things, it's a unique enough sound that it seems like it would be pinpointed semi-easily enough.

symptoms: accelerate to any rpm over ~1500rpms and let off throttle - still in gear - card in spoke sound from engine bay, the higher the rpm the louder/more frequent the sound is. roll back on the throttle - even the slightest bit and the sound goes away.

any help would be appreciated.
Old 11-05-2010, 06:49 PM
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Check the flexplate/ flywheel for cracks etc.
Old 11-05-2010, 08:35 PM
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i have heard that a bad gasket on the air pipe can cause this sound. Not sure if you even have the air system.
Old 11-10-2010, 11:43 AM
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Air valves... Try blocking off the air valves and see if it continues.



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