× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Broken cloyes timing chain 3.6 GM
Posted to Technical Discussion Forum on 9/10/2021

[...trimmed text...]

That's correct, it happened to a customer of mine after I rebuilt his GM 5.3 heads. The plug came apart and dinged up the head and piston top, and bent a valve. Counterfeit AC Delco plugs from Amazon... Login to read more.