Mercer5
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1681, how do I test pressure


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check with a cylinder pressure guage and see if it bleeds down and is getting pushed into the crank.
Mercer5
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would it not then blow out the crankcase breather?


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it will take the path of least resistance.
Mercer5
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I just spoke to a 14 year Yamaha mechanic and he said if it is high pressure it is most likely from a blockage elswhere.
He said same stuff, check seal, o ring, shaft etc
I am perplexed and at wits end, I might have to bite bullet and take to Yamaha dealer.
He said same stuff, check seal, o ring, shaft etc
I am perplexed and at wits end, I might have to bite bullet and take to Yamaha dealer.


- Joined
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sometimes its worth the money to put the head ache on someone else.
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