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Buell Forum » Quick Board Archives » Archive through August 13, 2007 » 04 XB12R engine surge « Previous Next »

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Endoman28
Posted on Monday, August 06, 2007 - 09:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm in need of some tech help on my 04 XB 12R. no trouble codes come up but engine will start surging spuraticly at any RPM any speed any gear. Changed coil,plugs reset TPS and AFM on digital tech at HD service dept. the tech can't find the trouble. Any help would be great trouble stared around 20,000 mile service. check fuel tank vent to make sure its not vapor locking don't know what to try next. mods were install from day race ecm k&n air filter and buell race muffler. just trying to give all info i can.
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Oldog
Posted on Wednesday, August 08, 2007 - 02:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

air leak on the intake manifold?
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T9r
Posted on Wednesday, August 08, 2007 - 07:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ignition timing checked?
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Natexlh1000
Posted on Wednesday, August 08, 2007 - 03:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Exhaust valve (in muffler) flopping around in there?
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