Question about Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1

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Getting fuel in oil on 19hp b&s motor. Cleaned carb and drained oil, fresh oil and started motor, motor ran for 3 or 4 minutes then had to use a little choke to keep running and then it started blowing oil out of breather(oil and gas)or crankcase vent. I had just drained oil and put fresh oil in so is this just the a carb issue or is there a valve head gasket issue

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How long did it take to do this job..did you clean the the carb first...then the oil or vise versa...the reason I as is ma y if these motors are equipped with an electric valve on the carb that go bad or stuck allowing the gas to continue flowing after shut down eventually in the intake valves and into the crankcase...causing smoke and high crankcase pressure and out the carb and exhaust...no use changing it WILL happen again..the fix is simple put an inline gas shut off and shut it off if only shut down for minutes...happened to my 18 horse Briggs...just shut it off every time you turn the engine off..Hope this helps..good luck..

Posted on Nov 08, 2014

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: oil in air breather

sounds like you have too much oil in the engine (should normally be around 500-600ml when there is too much oil, it gets past the piston rings and pushes it through to the head.

Posted on Jul 09, 2009

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