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RC51 One cylinder not firing under 5.5k rpm Ideas?

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Old 07-23-2008, 4:28 PM
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Join Date: 07-23-2008
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RC51 One cylinder not firing under 5.5k rpm Ideas?

My 2001 rc51 has been running rough recently throughout the low and midrange rpm's. Today I noticed while revving the motor that one cylinder is not firing below 5500rpm. Above 5500 rpm everything is fine. Any ideas? I have checked/cleaned all the battery and grounding connections.

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Old 07-23-2008, 4:35 PM
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Join Date: 10-06-2006
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Re: RC51 One cylinder not firing under 5.5k rpm Ideas?

have you changed/gapped the plugs?
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Old 07-23-2008, 4:41 PM
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Join Date: 07-23-2008
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Re: RC51 One cylinder not firing under 5.5k rpm Ideas?

yes, about 2500 miles ago. The cylinder in question is the rear.
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Old 07-23-2008, 4:47 PM
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Re: RC51 One cylinder not firing under 5.5k rpm Ideas?

not especially familiar with rc's but it sounds like a fouled plug to me.
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