Re: Dave's engine knock

["Myron Ware" <cmw@domain.elided>]

Dave,
  (sorry if this gets posted twice).  On my original 152, I had a 
knock when the engine was put under load or revved.  I pulled plug 
wires until I found it was the #1 cylinder.  The service manual 
troubleshooting section stated it could be a worn piston skirt.  I 
pulled the oil pan and tugged on the skirt of said piston and it made 
the same type of slapping sound I'd heard while it was running.  
After pulling it out, I could see where the skirt had worn beyond 
tolerances.  A new piston from NAPA pressed on the rod, and rings for 
it and the rest, and all was as quiet as it should be.
HTH,
Myron

-----Original Message-----
> Anyone have any ideas about my engine knock?  My current theory is
> bad wrist pin.