High RPM case oil leak
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Thread: High RPM case oil leak

  1. #1
    Junior Member SWE's Avatar
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    High RPM case oil leak

    I have a older TW, 1990 with 11K miles on it, by others, it was a garage find a few years ago. Had it out today for the first run of the year. Noticed a case oil leak from the lower rear of the case, only at high RPM. No leak at idle or rev up, just when underway. It does a good job of spraying oil on the rear tire, only noticed it on the ride over to a power line I like, on the dirt it's hard to see. Before I take it all a part, figured I would ask if anyone has run into something like this.

    Thanks
    littletommy and Ken like this.

  2. #2
    Senior Member msmiller's Avatar
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    Could it be your crank case breather hose. Looks like this.
    Attached Images Attached Images
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  3. #3
    Senior Member Peterb's Avatar
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    I recently had an oil leak on my TW. One of the lower rear bolts on the right engine cover was missing and a lot of them were very loose. All good now thanks to my buddy Andrew for noticing it and fixing it in his driveway.
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  5. #4
    Junior Member SWE's Avatar
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    Thanks
    Ill dig into it latter this week, let you know what I come up with.
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  6. #5
    Senior Member scotti158's Avatar
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    An overfilled crankcase will, at high speeds, spew some oil up into the air box and leak out from there also.
    littletommy, Ken and socalnative like this.
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