Another piston failure analysis!

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XSKIER

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Have a look at this piston. The operator said it was running great until it quit. So, what do you think?

Top:


Exhaust side:


Intake side:
 
Tack up another lean seizure! That happens way too much. People need to learn carb tuning.
 
Bonus points if you can figure out the engine from the weisco catalog...
 
Alright, since you are on the right track I'll go ahead a prematurely spill the goods!

 
Nah. More water than the 10% ethanol could keep in suspension. Maybe a can of dry gas would've fixed 'er?
 
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