carb issues - Kawasaki KLR 650 Forum
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post #1 of 16 Old 06-11-2011, 11:40 AM Thread Starter
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carb issues

On my '08 I have a DG exhaust, drilled the slide, had 2 shims under the needle, 145 main jet. Bike was running fine, looked at the plug, it was white, exhaust black sooty, Installed a 148 jet, removed the shims, now the bike starts, runs, but at 1/4 to almost 1/2 throttle, it spits and sputters, over 1/2 throttle, it seems fine, any suggestions?
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post #2 of 16 Old 06-11-2011, 01:40 PM
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Drop back the jet size. Too much fuel.....
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post #3 of 16 Old 06-11-2011, 02:55 PM Thread Starter
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i got 1 1/2 turns on a/f screw...
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post #4 of 16 Old 06-11-2011, 06:08 PM Thread Starter
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could the fuel level be the problem?
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post #5 of 16 Old 06-12-2011, 11:07 AM
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I'm confused. You have some contradicting info here. A white plug indicates a lean condition. Black sooty exhaust would be a rich condition. So it's got to be one or the other. Was it a new plug? If so how long did you ride it before looking at it again?

As for the fuel level. Is your gas tank full? Did you mess with the float height by any chance? How new is the gas that is in it?

Also if the bike was running fine why would you remove the shims and increase the jet size? I would suggest just going back to how you had it. It does sound like it is getting too much fuel. If you are unsure take your bike for a decent length ride and recheck the plug.


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post #6 of 16 Old 06-12-2011, 12:10 PM Thread Starter
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Angry

yes it was a fairly new plug, it was white, and the exhaust was black, I figures out what my problem is, when I took out the main jet and jet holder, evidently, the jet needle fell out now i can't find it, so i have to wait till tuesday to see if any local dealer has one.

That is what happens when you don't pay attention and try to hurry
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post #7 of 16 Old 06-12-2011, 12:42 PM
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That is a sneeky little devil. It has a way if sticking inside the carb and as soon as you're not looking it falls out. The float pin is almost as bad at disappearing.
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post #8 of 16 Old 06-13-2011, 11:50 AM Thread Starter
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My understanding is that a 1990 and up HD Sportster and the KLR use the same carb. Kawasaki wants $28.00 dollars for their part and HD wants $8.00, I would assume they are the same part, unless the HD part has a larger I.D., because the Sporster is a bigger engine.
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post #9 of 16 Old 06-13-2011, 03:20 PM
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That's the part that I always warn people about. It's under your workbench.

The HD part should be the same.

BTW, you should not have changed jet sizes. You haven't done anything to the breathing to warrant a jet change. You will very likely be too rich.

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post #10 of 16 Old 06-13-2011, 03:56 PM
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Quote:
Originally Posted by Icepick View Post
My understanding is that a 1990 and up HD Sportster and the KLR use the same carb.
Not exactly, Icepick, IMHO. The Harley CV40 and the Kawasaki CVK40 are similar with considerable parts interchangeability, but . . . the Harley carb has an accelerator pump and, I think, a different mounting scheme from the Kawasaki-specific component.

Can't speak to needle commonality.
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