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Wiring and Electrics Questions, answers and posts pertaining to electrical mods and problems

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Old 07-31-2017, 02:48 AM   #1
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Join Date: Feb 2005
Posts: 3,767

May 2009 KOTM

Default loosing rmps at speed

I have a 98 Post 750 Kat and when traveling at a consistent speed of 60mps+ the engine will loose 300rpms every 5-10sec and it very annoying.

the bike starts and ides perfectly. Ive replaces the spark plugs and its still doing it.

any ideas?
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Old 07-31-2017, 09:22 PM   #2
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Join Date: Oct 2011
Location: Oakland, CA
Posts: 4,025


If it's only dipping a little bit, I would guess electrical gremlin. A fueling issue would likely not result in such a small drop. Check your could for arching?
1998 Katana 750
1992 Katana 1100
2006 Ninja 250

2006 Katana 600 RIP - 130k miles
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