How can you tell the difference between a lifter noise and engine problems?

2004 PONTIAC GRAND PRIX
175,000 MILES
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HELP4EBONY
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I'm getting conflicting opinions from mechanics and I'm not sure whether to be worried about the noise or not.
Dec 27, 2011 at 3:22 PM
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ASEMASTER6371
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any noise is an issue, no matter what the mileage. a good trained ear will tell where the noise is coming from.

Roy
Dec 28, 2011 at 7:51 AM
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RASMATAZ
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A valve lifter noise emits a ticking/tapping/clacking sound-engine bearings will be thudding/thumping noise-
Dec 28, 2011 at 1:39 PM
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