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Old 09-01-2009, 03:59 PM   #1
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Default Flywheel lock.

Does anybody know why my flywheel would lock after a couple runs. Im just breaking in a engine and i just tried to start it again but the flywheel wont mobe at all. Any help?
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Old 09-01-2009, 04:03 PM   #2
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Your motor most likely still has that "new pinch" feel as it's not yet broken in. Heat the motor to about 200 degrees and it should loosen up enough to turn over and start. It's a good idea to continue heating it all the way through it's break in process...the rod will love you for it!!
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Old 09-01-2009, 04:07 PM   #3
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Oh yea ive been heating it. I dont think its because of the pinch. It wont move at all. Like before i could move it then it would stop once it gets to the tight pinch but now it wont move left or right and when i hit the bump box it just seems like the bump box is getting worn down.
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Old 09-01-2009, 04:16 PM   #4
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anyone know why this is happening??
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Old 09-01-2009, 04:22 PM   #5
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Did u let ur motor cool down with the piston at the top of the sleeve? If so you are going to have to heat it to 225 or more to free it up
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Old 09-01-2009, 04:26 PM   #6
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No i made sure it was at bdc after i shut it down. Ive heard some people talk about hydrolock, not sure what that is though. Anyone know?
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Old 09-01-2009, 04:28 PM   #7
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pull the glow plug and see if that helps at all.
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Old 09-01-2009, 04:29 PM   #8
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Just means the engine is flooded..try taking out the glow plug and see if you can turn the flywheel
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Old 09-01-2009, 04:46 PM   #9
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Ok i got it thanks for the help james. I guess it did cool off at the top of the sleeve.
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Old 09-01-2009, 04:50 PM   #10
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becareful or you will do some damage!!! Make sure that you are heating the engine up each time you attempt to start it. Ideally you need to heat up to 200-210 degrees. As soon as you stop the motor, make sure you move the piston to BDC.
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Old 09-01-2009, 05:09 PM   #11
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I do that everytime so nothing to be worried about.
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