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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through September 02, 2007 » XB12R Base Gasket oil leak? « Previous Next »

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Racer66
Posted on Monday, June 25, 2007 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a 2004 XB12R with 7200 miles which appears to have oil leaking from the rear cylinder base gasket. It doesnt appear real time but shows up 10-15 minutes (or the next day) after riding. It then runs down the primary cover so I initially thought it was the primary gasket, no such luck! I also see a piece of base gasket about .10" long poking out of the back side where the oil leak appears to be initiating from. I tried to locate the leak with a tube listening at the base with the engine running but didnt hear anything. There are no visual signs of blow by as one would expect. Any thoughts?
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Racer66
Posted on Monday, June 25, 2007 - 01:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Answered my own question, I pumped air into the timing mark hole and observed bubbles at the base gasket
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Buell82
Posted on Tuesday, June 26, 2007 - 08:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bummer news! Sucks to have to do a partial tear down just to fix a stupid leaky gasket. Hope it wont take too long, Mike
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