on the old briggs motors the hose that went to the carb. was a crankcase
breather [a valve that let vapor or pressure out of the crankcase] it could
go bad and let oil blow into the carb. this may be the same thing on the
newer motors
"Steveo" wrote in message
...
(Greg) wrote:
I have a 2 years, 2 months old Briggs and Stratton 14hp engine on a
Troy-Bilt 42" chassis. It just ran out of warranty 2 months ago. When
I first got the mower it would backfire every now and then. Last
summer it would blow a puff of smoke when I started the engine.

Today, the engine would rev very high until I engaged the blades, then
it would resume normal rev speed. I checked a few things, and noticed
a rubber hose that attached to the carb from the engine had came lose
from the carb. I placed it back on, added oil (as I always do when
it's needed), and mowed the grass. When I finished, I turned the mower
off and restarted to see if the high revs woul dhappen again. When I
did, a large amount of oil blew out the rubber hose I had reconnected.

I'm afraid this may not be good news. This engine has been well cared
for - regular oil and filter changes, etc. I had a similar problem
with another B&G engine a few years ago. I will not be buying another
mower with a Briggs engine mounted in it.

Anyhow, obviously, I need to fix this 2 year old mower. Before I tear
down the engine, anyone want to suggest the problem based on the
symptoms? Thanks.

Does the oil smell like gas?

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