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Author Topic: Low speed miss  (Read 1437 times)

Offline firemanjim

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Low speed miss
« on: July 08, 2020, 03:31:29 PM »
OK guys, took my street bike out after sitting for a couple of months, it has a miss under very light throttle, as soon as you give it more it clears up. Threw in new plugs, swapped coils, fresh gas, and balanced the throttle bodies. No vacuum lines off or broken, still does it. Any ideas?
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Online RansomT

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Re: Low speed miss
« Reply #1 on: July 08, 2020, 03:46:54 PM »
How is the idle?
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Offline sportbikeryder

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Re: Low speed miss
« Reply #2 on: July 08, 2020, 08:29:31 PM »
Perhaps an issue with the IAP sensor or TPS giving a bad reading at "tip in" of the throttle.
Any day on a motorcycle like this that ends just needing parts and labor is a good day.
4.82, 158.67mph 1/8th mile 7.350, 200.32mph 1/4 mile Riding

4.392, 176.79mph 1/8th mile  6.610, 228.15mph 1/4 mile Tuning

Offline sportbikeryder

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Re: Low speed miss
« Reply #3 on: July 08, 2020, 08:32:55 PM »
I built this and can flood it with about 4000cc/min of methanol per cylinder if I want. I'm pretty sure the "tip in" will be a little rough in it as well, but I dont give a damn  :FIREdevil:
Any day on a motorcycle like this that ends just needing parts and labor is a good day.
4.82, 158.67mph 1/8th mile 7.350, 200.32mph 1/4 mile Riding

4.392, 176.79mph 1/8th mile  6.610, 228.15mph 1/4 mile Tuning