erratic idling when cold and choked.....? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 5 Old 04-06-2009, 12:33 PM Thread Starter
 
Join Date: Apr 2009
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erratic idling when cold and choked.....?

Hello all! Brand new to the forum and glad to be here.

I'm hoping somebody here might have an idea about how to fix my problem.

I've got an 2004 650 with a little over 16,000 miles that's been a great bike. Over the past few months, it's developed a habit of, when it's cold and choked, it will crank, but then idle very erratically. Sometimes it will idle real fast, but then all of a sudden it will drop to nothing and die if I'm on there to keep it running and then it might idle real fast again.

Once it's warm, it runs normal and idles normal.

I'm kinda at my wits end. Anybody got any ideas to what's causing it?

Thanks greatly in advance!
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post #2 of 5 Old 04-06-2009, 02:36 PM
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Location: Corpus Christi, TX
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First guess is some carb junk in the low speed jet. Might try running some carb cleaner (SeaFoam seems to be the preference here but I also like Berrymans and Techron Concentrate.

That failing, you might want to remove the carb, do a soak and blow out. Not hard to do. A Clymers manual will cover it.

Another thought is to check the travel of your choke cable and the fitting (junk plastic) where the cable attaches to the carb. Possibility you're not getting full travel from the choke plunger.
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post #3 of 5 Old 04-06-2009, 03:38 PM Thread Starter
 
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Quote:
Originally Posted by BIGIRON View Post
First guess is some carb junk in the low speed jet. Might try running some carb cleaner (SeaFoam seems to be the preference here but I also like Berrymans and Techron Concentrate.

That failing, you might want to remove the carb, do a soak and blow out. Not hard to do. A Clymers manual will cover it.

Another thought is to check the travel of your choke cable and the fitting (junk plastic) where the cable attaches to the carb. Possibility you're not getting full travel from the choke plunger.
Those are all good ideas. I'll look at the choke cable fitting first before I tear into the carb!

It's been a while since I've had the valves adjusted. Could that cause it?
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post #4 of 5 Old 04-06-2009, 05:08 PM
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Certainly could be valves, but since you have normal performance after warm=up, I'd put them pretty low on the list.
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post #5 of 5 Old 04-07-2009, 02:41 AM
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Join Date: Sep 2006
Location: Sacramento, CA
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What BIGIRON says and it sounds like a good time to do general maintenance to remove the odd element problem.

- new gasoline
- air cleaner
- valve adjustment
- check spark plug
- lube all cables
- check choke cable routing
- check light bulbs for corrosion
- check battery for proper fluid levels
- clean battery terminals and cables
- check brake pads
- check coolant and coolant level
- check for loose bolts, especially the exhaust

If it has been stored
- check for whatever is living in your airbox
- carburetor cleaning as BIGIRON says
- change oil and filter

Tim

2005 KLR 685
2015 Yamaha Super Tenere ES, 5/23/2015
2012 Yamaha Super Tenere; Purchased 7/30/2011; Sold 5/23/2015
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