Mechanics

CHEVROLET TRAILBLAZER PISTON PROBLEM

2005 Chevrolet Trailblazer • 17,400 miles

My trailblazer started making a slight knocking sound and my first thought was a spun bearing but I never lost any oil psi. Im thinking now maby a broken piston. It will make a slight nois at idle but at 2000rpm is when you can really here it. Also it seems to be using oil bad. It is all goin out the pipe I believe. What are the chances of this just being somthing simple. The motor is a 4.2 inline 6
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December 17, 2012.




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