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Message: <blockquote data-quote="maxpg" data-source="post: 22969" data-attributes="member: 8040">I think it is all because VVT system. When something is getting wrong in Ecotec, like PCV cloggage in my case, it degrades the oil. VVT then tries to remedy it by playing with actuators. That leads to elongation of the timing chain, that maxing the tensioner and then the chain slamming everything around. A snowball situation that will destroy any brand timing chain. The tensioner on my Ecotec just fell in pieces.So, I would say, it depends on how long your Ecotec has been under that condition. On early stages you may buy some time even with just a new any brand timing chain and reset tensioner. Make sure your PCV is not clogged, oil color and consistency normal and there are no other things like bucking.</blockquote>