Question about 2002 GMC Sierra 2500HD

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Lifter knoking when start up 8.1 gmc moyor - 2002 GMC Sierra 2500HD

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This may be from a worn lifter that is allowing the oil to drain back . Check the viscosity of the oil you are using. If you are using a cheap after market filter be aware that some filters do not incorporate an anti drain back valve in the filter and this allows the lifters to empty m.

Posted on Feb 14, 2014

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Posted on Jan 02, 2017

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