Float hose is purging gas - Kawasaki KLR 650 Forum
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post #1 of 8 Old 06-09-2018, 03:36 PM Thread Starter
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Float hose is purging gas

Good day everyone,
I am having a problem starting my klr after complete overhaul. I did the 692 kit from eagle mike and while everything was a part I did KLX carb upgrade.
I cleaned the carb and installed new needle and 140 jet for high altitude.
Well here is my problem...when I go to start it and crank it over I notice that gas starts purging from the clear hose under the seat. Once I start to see the gas spitting from the hose I have to stop cranking motor over then gas reseeds back to carb.

I took carb off again and checked my work everything seems fine. I cranked it over and she started for a min, but I didn’t get to the throttle before she died. I started cranking her over again, but the fuel started purging through the hose again. I’m totally baffled. Can anyone give me a clue?

Thanks,
Jeremy in Telluride, CO


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post #2 of 8 Old 06-09-2018, 04:07 PM
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Jeremy,

You floats are probably stuck open. When you crank the engine the engine’s vacuum opens the petcock and fuel flows as fast as it can into the bowl and overflows out the vent tube.

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post #3 of 8 Old 06-09-2018, 10:19 PM Thread Starter
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Thanks for you help today..installed new float valve bike runs perfect. Only had to spend 40 dollars and 3 hours driving to get the darn thing.


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post #4 of 8 Old 06-10-2018, 03:49 AM
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Should your hose "surge" fuel again (as when sometime you're on the road or trail), try bashing the carb with sharp strikes (don't break anything!) from a hammer or screwdriver HANDLE; the shock of the blows may release the floats/tang/float valve from the "stuck open" position, restoring correct float bowl fuel height.
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post #5 of 8 Old 06-19-2018, 04:56 PM
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Quote:
Originally Posted by Damocles View Post
Should your hose "surge" fuel again (as when sometime you're on the road or trail), try bashing the carb with sharp strikes (don't break anything!) from a hammer or screwdriver HANDLE; the shock of the blows may release the floats/tang/float valve from the "stuck open" position, restoring correct float bowl fuel height.
Actually I'd recommend to turn the fuel valve OFF and ride the bike over a bumpy stretch to jiggle things loose or just drain the float bowl to allow the float to drop to the bottom and possible flush any crud out of the float needle.

pdwestman
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post #6 of 8 Old 06-19-2018, 08:09 PM
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Draining the float bowl is ALWAYS in good taste; however, I'd prefer not riding the bike with a line purging gasoline, but that's just ME!

Whacking the carb with a hammer or screwdriver handle (no, NOT with an 8-lb sledge!) while the bike is static sometimes closes a stubborn float valve in my experience.
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post #7 of 8 Old 06-19-2018, 08:28 PM
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With the petcock turned OFF, it Should stop the flooding. Unless the 4 holed selector disc in the petcock is the root cause of the flooding. Correct?

pdwestman
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Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #8 of 8 Old 06-19-2018, 10:48 PM
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Absolutely correct.

Only one float bowl full of fuel to contemplate.

Still, I'd whack the carburetor FIRST.

YMMV!
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