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checked about everything.
What i found is that upper pulley for timing belt is turning, however the cam is not. Any ideas on problem?

 
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Were there any stored codes, did you get a CEL? You may be looking at a position sensor issue. I'm guessing the pulley is moving when you try to start it?

 
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It sheared key in timing belt pully on camshaft. Why would camshaft lock up?

 
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if the cam is locked up it could be bent valves or a warped cam which i highly doubt it

 
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+1... bent valves.

 
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Had to use pipe wrench in order to turn cam. All the valves are moving, however it does get real hard to turn in a spot or two.
The oil light came on just a few miles before it stopped running.
Any ideas on the possible cause? Also what all do i need to check/replace? Any help appreciated.

 
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well it doesnt sound good when your oil light came on and it quit running but anyways i would take the head off and take it to a machine shop and see if it needs worked annd i would also check the block and pistons

 
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doing it now.
do you think i need to replace oil pump?

 
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was it low of oil when the light comes on