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 Crankcase Breather 
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MMT Member

Joined: Sat Nov 09, 2019 7:38 pm
Posts: 16
Post Crankcase Breather
I was under the impression that a crankcase breather was supposed to let air out of the crankcase but now allow air into the crankcase. However, when I blow into the breather hose air freely flows into the crankcase. Am I wrong?

23hp Vangaurd


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Fri May 06, 2022 10:59 pm
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Joined: Fri Jan 10, 2014 1:16 pm
Posts: 2107
Location: Gladewater TX
Post Re: Crankcase Breather
its not a 100% seal either way. works like a pcv valve. u can remove it and look at it


Wed May 11, 2022 9:43 am
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