Motor wont turn

[Aferrell71]

After troubleshooting a no start condition, and replacing fuel pump, fuel filter, crankshaft sensor and cam shaft sensor, was checking timing by hand cranking the motor and after 1 revolution and a half now it wont turn at all.


Please help

[CaptainJohn]

It's in neutral or park, right? Was/Is the cam sprocket moving with the crank? I'd personally move the crank backwards a small amount to confirm, if I were in that situation. If the cam isn't moving you probably have a timing belt problem.

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[Aferrell71]

Yes when cranking the motor the cam sprocket was moving. Could see the timing belt moving. The car is in park

[Seerlah]

Spark plugs removed? Could simply be compression messing with you.

Were you able to confirm correct timing? I don't suggest turning th engine opposite direction. Parts were designed to be rotated one way.

[Aferrell71]

I had 1 spark plug removed. I wasn't able to check correct timing yet. That's what I was looking to do was check timing. Couldn't see it well enough the first time around, so was going to back to check it.

Should I take out all 4 plugs and do it again?

I was also told I should take tension off the serpentine belt and check to see if the alternator is locked up, which would cause it not to turn also.

[cschuster]

Removing all spark plugs will make it much easier for you to turn. You could also take off the serp. belt. Not a bad idea - that way you're only turning the motor and will have better feel for any binding/contact.

[themadscientist]

Verify timing before you do anything else. If that's fine pull the plugs and drive belt.

[old guy]

Remove all the plugs and turn the engine in the normal rotational direction. The only resistance will be the cams compressing the valves. If the engine comes to a hard stop you are going to have to remove the head. Take a really close look at your timing belt. I suspect you are going to find a few missing teeth somewhere on the belt.

[Aferrell71]

Yes it came to a hard stop. tie to sell her.