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Buell Motorcycle Forum » Old School Buell » Archive through August 20, 2008 » Low speed stumble « Previous Next »

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Silas_clone
Posted on Wednesday, August 20, 2008 - 07:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I replaced my plug wires with a set from American Sport Bike. It made the engine run smoother, no surprise since my old wires were in rough shape.
I cable tied the new wires together and was careful to keep them away from the frame.

High speed running is noticeably smoother, but I seem to have developed a low speed cough or stumble. I raised my idle up a bit to help this, but was wondering if the [assumed] better spark may have caused a lean condition at low speed?

My low speed screw has the metal plug missing, so I assume Harley tax has been paid.

The bike has 25K mileage, but I have never checked the ignition timing.

Before I start messing around with the mixture, etc., I figured I'd find out what you all thought.
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Oldog
Posted on Wednesday, August 20, 2008 - 11:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

better spark has nothing to do with the mixture, the stumble could be an air leak.
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Bikerjim99
Posted on Wednesday, August 20, 2008 - 05:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I agree with Oldog.

You mentioned cable ties on the spark plug wires. You should not tie them together, but keep them separated, as a good practice.
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Silas_clone
Posted on Wednesday, August 20, 2008 - 10:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Well, I have been planning to replace the intake and exhaust gaskets.

Is there a way to static time M2's?
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