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oil in aircleaner

1379 Views 14 Replies 10 Participants Last post by  hoss6br
:trink39: hi all, im looking for sum help on a 12 hp brigs motor i just got. 1st of all the motor runs great, no smoking or rough runing. that being said the problem im having is oil is coming outa of the tube that comes from what looks kinda like a pvc valve to the air cleaner. i use to have a 8hp that did the same thing, a friend told me i needed a valve job. is this the case or is there another simple fix for this? i dont know if its a pvc valve or not for sure but you can take it off and inside you can see the valve stems. thanks for any help
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I have some horizontal 6 & 7 hp Tecumseh's that blow oil out of the breather tube onto the tractor,and its annoying,but I cant blame the rings ,or the breather ,both have been replaced,the compression is excellent,and the breather has been cleaned thouroughly and I also swapped one off a similar engine with no change..and they did not do this before they were stored away for a few years in a dry shed too..

Only thing I can find "wrong" is one has a oil seal on the flywheel side you can hear air hiss out of when you spin it over by hand slowly--it doesn't leak any oil there however..
I'm thinking enough air leaks by that seal,to disturb the breather's reed flapper valve's action,enough to defeat it from working properly??..another small engine guru I know said the valve clearences being out of spec can aggravate this trouble too,but how,eludes ME!..
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