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1999 Jeep Grand Cherokee Question: Engin knocking or valve tapping



pearson34, 4.0L 6 Cylinder, Tracy, CA, September 12, 2010, 19:39

Engine has tapping noie. sounds like valve lifters

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  • Answer #1

    September 13, 2010, 18:12

    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/directory?address=95304&car_brand_names=Jeep

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