fluttering between 3000 and 4000 rpm - K-Bikes.com - Excellence in Motion
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post #1 of 3 (permalink) Old May 9th, 2008, 7:56 pm Thread Starter
Join Date: Oct 2007
Location: Austin, TX, USA
Posts: 5
fluttering between 3000 and 4000 rpm

I have an '02 K1200RS with 38,135 miles. It started having an intermittent runability issue @ 3000 rpm for the last 1000 miles or so. At times it is hardly noticeable at other times it picks up a terrible misfire but clears up after 4000 rpm. I haven't looked at the spark plugs yet (which I will change when I do a full service next weekend) but it seems like a sensor maybe messing up. I replaced the 02 sensor @ 31,000 miles the bike had no runability issue at that time but my mileage dropped to around 24mpg. Mileage went right back up with new 02 sensor. I haven't seen a post on here with the same problem I'm having this time but I hope someone has seen this and can point me in the right direction. Any input is appreciated.

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post #2 of 3 (permalink) Old May 9th, 2008, 8:06 pm
Join Date: Jul 2004
Location: , SoCal., USA
Posts: 1,507
You haven't said what you have done to it for maintenance, so I would replace the plugs, air filter and fuel filter first and leave the sensors alone.
Take an ohm reading on the plug wires also. A reading of 6.5K-7K ohms is good.

Bruce C
'04 K1200RS Capri Blue(totaled)
2008 Triumph Sprint ST
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post #3 of 3 (permalink) Old May 10th, 2008, 8:02 pm
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Join Date: Dec 2005
Location: Statesville, North Carolina, Good Ole USofA
Posts: 493

I had the same problem with a 2000 KLT I had a few years back and on a whime, ran fuel injector cleaner and it cleared it up in less than half a tank. I've used it ever since and currently use the Lucas cleaner on my '02 KRS. I add some every three tanks or so. Give it a try if you never have.

[COLOR=DarkOliveGreen]Jim S.
[/COLOR] * Everyone crashes. Some get back on. Some don't. Some can't.
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