Hard start after sitting in the sun. - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 13 Old 08-25-2010, 09:47 AM Thread Starter
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Hard start after sitting in the sun.

I have recently been having a hard time starting my '09 KLR650 after the bike has been sitting in the direct sunlight for a while. I have to open the throttle fully and crank on the starter button. Sometime I even have to open the choke a little. Once it starts, it runs beautifully. This only happens when the bike is sitting in the heat of direct sunlight, never when it is parked in the shade, my garage, under a tree, etc.... I live in southern Arizona where the temps can be well over 100F. Any ideas?
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post #2 of 13 Old 08-25-2010, 10:11 AM
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Originally Posted by Jigsaw View Post
I have recently been having a hard time starting my '09 KLR650 after the bike has been sitting in the direct sunlight for a while. I have to open the throttle fully and crank on the starter button. Sometime I even have to open the choke a little. Once it starts, it runs beautifully. This only happens when the bike is sitting in the heat of direct sunlight, never when it is parked in the shade, my garage, under a tree, etc.... I live in southern Arizona where the temps can be well over 100F. Any ideas?

I live in the desert and haven't noticed any difference from the heat. You may have a gas tank venting problem. Try opening the gas cap next time and see if that makes a difference, if so check the vent lines. Tipped the bike over lately? Check the overflow cannister (black thing by the shock with hoses attached) gas in there will make the bike harder to start. Could be the carb vent lines too I guess.

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him. 1 Cor 2:9

Last edited by Spec; 08-25-2010 at 10:15 AM.
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post #3 of 13 Old 08-25-2010, 10:56 AM
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I am in the Glendale AZ area.. I have had no issues like this so far... let me know what you find.
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post #4 of 13 Old 08-25-2010, 02:34 PM
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I'm betting venting. My bike likes the heat. So much it whistles a tune.




"In a car you're always in a compartment, and because you're used to it you don't realize that through that car window everything you see is just more TV." R. Pirsig

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Click my handle for a link to my homepage/blog...which has nothing to do with MCs. Free literature and music! Viva La Revolucion!
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post #5 of 13 Old 08-26-2010, 05:24 PM Thread Starter
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Thanks everyone for your input. I have check all the vent lines/hoses and don't see any kind of clog or blockage. The overflow canister seems to be fine as well. And like you Lockjaw, my bikes whistles while it works too. Kinda weird.
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post #6 of 13 Old 08-26-2010, 05:45 PM
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Originally Posted by Jigsaw View Post
Thanks everyone for your input. I have check all the vent lines/hoses and don't see any kind of clog or blockage. The overflow canister seems to be fine as well. And like you Lockjaw, my bikes whistles while it works too. Kinda weird.
No prob, did you try it with the gas cap open? Cap venting problems are easy to fix but can be frustrating as hell. I have a 73 Honda and it would run for a few blocks and die over and over...then I got a little smarter and tried riding it with the cap open. Problem gone. Fixed the cap vent and all good.

Oh, and lots of bikes, esp KLRs, whistle from the magic whistling gnomes in the tank...or cause of heat and the properties of gasoline...I prefer the gnomes theory.




"In a car you're always in a compartment, and because you're used to it you don't realize that through that car window everything you see is just more TV." R. Pirsig

PPMC #1.
Soon, we ride.

AKA JD Mader or you can call me "Dan" just not early for dinner.

Click my handle for a link to my homepage/blog...which has nothing to do with MCs. Free literature and music! Viva La Revolucion!
-------------------
2008 KLR 650
RIP DM - Soon, we ride.
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post #7 of 13 Old 08-27-2010, 12:31 AM
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Sometimes when I turn my bike off while waiting at a red light, it is very difficult to restart. SOunds like the same issue

Erik
2003 Bandit 1200S
2009 KLR 650

74 Honda CB360
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post #8 of 13 Old 08-27-2010, 12:01 PM
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I also live in Az. I have the same problem if it is sitting in the sun when over 105.
I think the gas in the card is expanding and doing a minor flood.
I give it no throttle to start but once it starts I keep it around 2000 rpm for aprox 30 seconds and that cures it.
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post #9 of 13 Old 05-19-2020, 04:11 PM
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Did you ever figure out this issue
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post #10 of 13 Old 05-19-2020, 05:06 PM
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Garage
Lol....thatís one long light!
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