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Thread: 2.2 Ecotec timing chain issue

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    2.2 Ecotec timing chain issue

    2003 Cavalier, quit running, no compression on two cylinders. I bought a new timing chain kit, replaced all the guides, sprockets, the chain, and the tensioner... lined it all up, good to go. So I decide to rotate the motor by hand, I move it about 1/4 turn, I hear SLAP. Another 1/4 turn, another SLAP. I hear the chain slapping the top guide, I feel like it is jumping teeth..... HELP I even took the head off, valves are okay.

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    Timing tensioner not engaged??

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    are you sure its not your valvs closing that you are hearing?

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    I did compress the tensioner and release once in the head.. could be the cam rotating a bit from the tension on the springs I suppose,keep in mind that I typically work on pushrod motors. I just can't imagine how this thing would run if it makes noises like that lol.

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