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Buell Forum » XBoard » Buell XBoard Archives » Archive through July 13, 2007 » Muffler Valve trouble? « Previous Next »

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Arnhold
Posted on Sunday, July 08, 2007 - 12:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hey guys, long time lurker, first time poster here.


I purchased a brand new XB12Ss about 3 weeks ago and have been loving every minute of it, but have developed a problem with the exhaust...I think.


The bike has about 700 miles on it, and I have been treating it pretty easy, following the break in recommendations. A few days ago the bike started sounding a little funny when running at roughly 3000 rpm. There was no noticeable change in performance, but it sounds like the valve in the muffler is opening and closing, changing the tone of the exhaust and making it louder, then quieter, then louder, then quieter...and so on. It will do this from about 2800 to 3300 rpm, regardless of speed. The check engine light also comes on, but will turn off once I get out of that RPM range.

I have searched and searched, but I can't seem to find any other documentation of this problem, and my local service guy said he's booked until the end of the month...so I was hoping you guys had some answers for me. If not, I guess I will be bikeless for a few weeks.


Thanks
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Xb12mel
Posted on Monday, July 09, 2007 - 10:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I had the same problem, developed at 750 Miles. Dealer/Service told me that I had to replace the muffler altogether. (He even said it was non-warranty!)

Thank God it was "cost prohibitive" because I almost did it. At 1800 miles the CEL went off and I haven't had a problem with it since. That was over 500 miles ago.

I highly recommend finding the cable and giving it a couple of pulls. Both at the point where it connects to the muffler and again under the air box cover. I think mine was just sticking. Yours might be doing the same thing.

Lastly, watch the fuel consumption. Mine went from 50 MPG to 35 when the light was on. I'm back up to about 42 now, but I think there are other factors at play.

Good Luck!!!
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