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Posted by Puddin' Man on July 12, 2007, 12:00 pm
On Thu, 12 Jul 2007 14:01:30 -0000, dale.prather@gmail.com wrote:
>I've got a 13 year old MTD riding lawn mower. It has a 12hp Briggs
>and Stratton engine. It ran fine one day and the next day it blew
>fire out of the muffler, (I didn't witness that with my own eyes)
Who was running it when the problem occured? Did they hear
a "Clunk"??
>it
>has oil in the muffler and the last time I tried to start it, it
>spewed a lot of oil out of the air intake.
>Do you have any ideas as to what could cause this?
>I was suspecting the rings and I've taken the cylinder out.
You removed the cylinder? Or just the head?
>What am I
>looking for at this point?
I'd look for a burned/mutant valve, among other things.
>Upon visual inspection, I'm not seeing
>anything that catches my eye. Is a visual inspection enough to
>determine if the rings are bad?
You should be able to tell if a ring is cracked, if the
cylinder is off.
>I was expecting to find something obvious since it went from working
>fine one day to broke the next. Maybe it's not the rings. Any other
>ideas or suggestions?
Look at everything that you can see. Are the valves warped? Is
the cylinder scored/damaged? Is the block intact? Does the piston
move properly and the valves open/close properly when you turn it
over by hand?
Time to take a full inventory of functional motor components.
Puddin'
"Mit der Dummheit kaempfen Goetter selbst vergebens!"
-Friedrich Schiller
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