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So I got a great deal on a non-running 2009 Saturn Outlook. I found a failed chain tensioner and 2 bent valves. I replaced the head and put a new timing set on but when I bar the engine over it stops at about 1/4 rotation. Can the VVT fail so much as to throw the timing enough for a piston to hit a valve. I've had it apart 3 times and each time it won't bar over a full turn. I used a Haynes manual and a bunch of 3.6 Timing Videos. I've done all this inside the vehicle but I don't know where I'm going wrong. I was once a mechanic earlier in life and I've talked to several who are at a loss as well.