2004 Chevrolet S-10 I Have a Timing Rattle Only When Engine(4.3)is Warmed Up.truck Runs

2004 CHEVROLET S-10

96,000 MILES

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I have a timing rattle only when engine(4.3)is warmed up.truck runs great no check engine light.I replaced cap and rotor with no difference.on cooler days rattle dissapears.what could this be

Oct 20, 2012 at 7:42 PM

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