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FJR Motorcycle Forums
Technical & Mechanical Problems
Bike Wont Start
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<blockquote data-quote="saread" data-source="post: 1461832" data-attributes="member: 13880"><p>If, and this is a big if, the air cut off valve failed the PAIR system could pull negative pressure on the crankcase from the air box. Or, depending on state, the crankcase could push positive pressure that way. The reeds should stop this. When I've looked at my reeds they were so gunked up that they weren't stopping anything. This is speculation of course, other than bypassing the rings, there isn't any real way for there to be oil in the cylinder. Well, unless the valve guide seals were gone. But that almost makes no sense in an engine with those miles. Neither does the PAIR failure. Just spit balling a bit.</p></blockquote><p></p>
[QUOTE="saread, post: 1461832, member: 13880"] If, and this is a big if, the air cut off valve failed the PAIR system could pull negative pressure on the crankcase from the air box. Or, depending on state, the crankcase could push positive pressure that way. The reeds should stop this. When I've looked at my reeds they were so gunked up that they weren't stopping anything. This is speculation of course, other than bypassing the rings, there isn't any real way for there to be oil in the cylinder. Well, unless the valve guide seals were gone. But that almost makes no sense in an engine with those miles. Neither does the PAIR failure. Just spit balling a bit. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Bike Wont Start
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