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KX250F engine problem

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I just rebuilt my kx250f engine and when I got it all back together it would not rotatate past TDC in either direction. Before I put the head back on it was fine, It spun freely. I know the timing is right, Start from pin #1 go to pin # 28 on the timing chain and so on. Any advice would be great.

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Yeah take the cam chain off make sure the cam lobes are not depressing the valves and see if you can get past tdc.

If you can then you have a timing issue

if you can't you're gonna have to tear it down again.

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Since your looking at tearing down again, dont cheat and try to reuse that head gasket again. You might be able to get

by with it. I tried it and it definitely caused me problems.

g'luck

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I looked at the timing again. I had the intake cam 1 tooth off. I still do not belive this is why it would not spin freely. It is fine now...👍

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