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International Automotive Technicians Network
Re: GM 5.3 Misfire
Posted to Technical Discussion Forum on 1/21/2020

This is it. You can crank them over with the valve cover off and they will move. Hook it up and run it with it off and the offender will quit moving. Not all will be a bad cam. A collapsed lifter and bent push rod is pretty regular. Good test. And not as messy... Login to read more.