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help diagnosing an engine knock

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Old Jun 3, 2009 | 08:57 PM
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nebur8
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Default help diagnosing an engine knock
only does this when it's warmed up. Starts at about 1500rpm-3500rpm. Here are a couple of videos. it sounds like it's coming from the driver side back of the intake area.

http://s705.photobucket.com/albums/w...t=06032009.flv

http://s705.photobucket.com/albums/w...6032009001.flv
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Old Jun 3, 2009 | 09:14 PM
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it kinda sounds like a bent pushrod, have you pulled the covers and checked them?
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Old Jun 3, 2009 | 10:34 PM
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i haven't pulled the valve covers yet. I havent encountered a loss of power though.
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Old Jun 4, 2009 | 09:02 AM
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when i remove the valve cover, what should i look for as an indication of a problem with the pushrods?
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Old Jun 4, 2009 | 01:10 PM
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Originally Posted by nebur8
when i remove the valve cover, what should i look for as an indication of a problem with the pushrods?

Take the rocker arms off. Then pull out the pushrods and roll them on glass tabletop or other flat surface and see if one is bent.
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Old Jun 4, 2009 | 05:51 PM
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any other opinions?
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