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Engin knocking or valve tapping

(1999 Jeep Grand Cherokee)
in Tracy, CA on September 12, 2010
Engine has tapping noie. sounds like valve lifters
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Popular Answer
on September 13, 2010
A tapping noise from the engine can be from any number of causes, ie: piston slap (excessive clearence between piston and cylinder wall), lifters, injectors, carbon buildup on piston tops etc. I suggest you take your vehicle to your local repair facility for inspection and diagnosis. here is a link to shops in your area: http://repairpal.com/jeep-repair-in-tracy-california
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