Question about 1996 Yamaha FZR 1000

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Oil shooting in to the air box

92 yamaha fzr 1000 when i reve it up oil from the crank case tube that connects to the airbox floods wil oil why is this happening??

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Hello,
From your brief description I'm guessing a high mileage machine? or Previous owners have revved too much from cold?
It sounds like the engine is possibly breathing? the pistons and compression rings are worn so exhaust gasses and compression leaks past them and pressurizes the crank case sending oil out the breather, so the air filter draws it in.
If the bike is performing o.k. and you can live with it try a dribble/breather can? pop the vent pipe into a seperate container to catch it. Make sure you seal the hole in the air filter so contaminents can't get in. also the new breather needs air circulation so trial and error on a recepticle.
Good Luck!
Paul 'W' U.K.

Posted on Jan 08, 2009

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