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1999 Chevrolet Tahoe 5.7 Clicking Noise EGR Valve

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I have a 1999 chevrolet Tahoe with the 5.7 and at start up it has a clicking noise almost like a lifter pecking until its warmed up. My question is this caused by a lifter or could it possibly be from the EGR valve or something else.

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Most commonly it's just that a faulty The valve Lifter That is becoming sticky with old age . The best thing you can do for this is too changer oil more frequently use cleaners and may be a good oil supplement .

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