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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through August 12, 2010 » Constant Inlet Manifold Seal Leaks 06 XB « Previous Next »

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12xbl
Posted on Sunday, May 16, 2010 - 02:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Hi Guys,

Has anyone had dramas with constant inlet manifold leaks on XB's.
I am working on a friends 06 XB12R, the local dealer replaced the inlet manifold seals 4 months ago as the bike was running like crap, but it has still run like crap ever since. I looked at it a few weeks ago and ran a stack of tests as per the manual and found leaks at both inlet seals. I replaced them this weekend but the bike still runs crappy and fires inside the throttle body every 5th or sixth beat, I again did the propane test and again found the rear seal leaking, I pulled the throttle body again and have found nothing wrong with the seal.
Does anyone know what the size of the outer machined section of the throttle body should be ?
I am taking the throttle body to a machine shop tomorrow as I have a feeling that the rear port on the manifold is not perfectly round.

Are there any better seals available other than the stock factory ones ?

Any ideas will be much appreciated.

Regards
12XBL
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Buellisticx1
Posted on Sunday, May 16, 2010 - 04:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
James, Intake gasket blue

http://www.twinmotorcycles.nl/webshop/artikel.asp? guid=YXHFSC&aid=1694&cid=442&s=&a=
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Sparky
Posted on Sunday, May 16, 2010 - 01:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
FWIW, I had persistent intake manifold seal leaks on my 96 S1 after several R&Rs of seals. Finally resolved the problem with a good layer of Permatex Ultra Copper Sensor-Safe High Temp RTV Silicone Gasket Maker, like the kind one would put on the exhaust pipe slip-on joint, on all 3 mating surfaces of the manifold along with new stock seals -- no leaks now.
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12xbl
Posted on Monday, May 17, 2010 - 06:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)
Thanks guys,

I picked up a pair of the James blue intake gaskets today ............ man what a difference, they are so much thicker and stiffer than the OEM seals, all fitted and no more leaks !!!!!
I totally recommend these over the stock seals.

Many thanks again.

12XBL
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