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Old 09-01-2013, 05:01 PM
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bairdco bairdco is offline
a guy who makes cool bikes
Join Date: Aug 2009
Location: living the dream in southern california
Posts: 6,258
Default Re: Too much fuel, not enough air.

its possible you cracked a ring, but normally that will destroy your piston, jug, and possibly everything else.

in short, theres two rings set into grooves around the piston. they expand to form a seal which gives you compression.

if you blew a ring, normally the parts fly around inside and gouge up the cylinder walls, crack your ports, chew up bearings, and all sorts of other nasty stuff.

and it's pretty obvious. it wouldn't just run rich. unless you got really lucky and the chunks blew out your exhaust before causing damage.

you can pull the head off and look for grooves in the cylinder walls.

on old cars the rings wear down eventually causing low compression, oil loss, etc, but our engines don't normally last long enough for that to happen. it's usually a catastrophic breakdown.
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