Question about 1993 GMC Sierra K1500

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I have a gmc seirra k1500 5.7L V8 and the engion is knocking and is really loud it started of with a ticking noise is this due to a bad plug?

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Yes this is definitely due to timing or plugs. First check the timing belt. It could be loose and needs to be tightened. If timing belt is OK remove each plug & check that the gaps of all the plugs are the same & that there are no oil deposit at the ends. If the plugs spark points are worn out, replace the plugs.

Posted on Nov 11, 2010

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