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New Piston/Sleeve Jamming?

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When engines get to tdc, they have that little "skip" you're talking about. The crank pin has reached it's maximum lift, that's all. It is normal, but can become quite pronunced with a worn crank pin or rod bushing.
 
When engines get to tdc, they have that little "skip" you're talking about. The crank pin has reached it's maximum lift, that's all. It is normal, but can become quite pronunced with a worn crank pin or rod bushing.

Go look at my revo thread ^^. Lol I need help ha.

Okay, so the crank pin holds the bottom of the rod on to make it turn yes? And the rud bushing is?? The bearing within the block that holds the crank in place?

Sorry I am not educated yet on in depth engine teardown, but will be soon I am sure of it.


(Robin- I just used the scotch pad to clean off the crank residue that was either burnt on or really hardened on it, and the inside where the crank turns, nowhere on the sleeve or piston)
 
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The rod bushing is at the bottom of the rod, it connects to the crank pin. If you didn't get a new rod, then yours may be slightly worn.....since the rod bushing is softer than the crank pin.
 
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