January 2nd, 2018, 01:54 PM | #1 |
ninjette.org member
Name: Ruben
Location: Arizona
Join Date: Sep 2016 Motorcycle(s): 2007 Ninja 250 and 1991 Yamaha Virago XV750 Posts: 228
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Stuck Float? Or maybe?
Hello everyone, it has been a while since I posted here.
I hadn't ridden my 250 in a while, so the weather was nice(AZ) and I charged my battery and started her up. She started fine, but when I looked down, I noticed a large amount of gas pouring out below the carbs! A few questions for you: First, is the likely cause of the gasoline pouring from the carbs a stuck float? I didn't see any hoses loose or cracked. Secondly, if the carb float is actually stuck, where does the gasoline come out of the carb? Is there an overflow port? I didn't think the overflow gas would flood out on to the engine if the float bowl over fills. Any suggestions before I remove the carbs? Thank you all in advance. Ruben |
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January 2nd, 2018, 02:01 PM | #2 |
ninjette.org member
Name: Ruben
Location: Arizona
Join Date: Sep 2016 Motorcycle(s): 2007 Ninja 250 and 1991 Yamaha Virago XV750 Posts: 228
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Additional. Carbs only overflow when bike is running.
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January 2nd, 2018, 02:25 PM | #3 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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It just about has to be a float valve that's stuck open. You should be able to tell which carb. You may find that if there's enough varnish built up to make a float stick, other critical parts and passages need cleaning too.
They overflow only when running because the vacuum petcock stops flow to the carbs when the engine is not running. |
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January 2nd, 2018, 02:27 PM | #4 |
ninjette.org member
Name: Ruben
Location: Arizona
Join Date: Sep 2016 Motorcycle(s): 2007 Ninja 250 and 1991 Yamaha Virago XV750 Posts: 228
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January 2nd, 2018, 02:52 PM | #5 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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In a rare case, the float just gets hung up at the bottom of its travel. Sometimes running the carbs empty and then refilling them fixes it, and sometimes tapping on the bowls with a screwdriver handle fixes the problem. If it's not a varnish buildup problem, it might be worth a try.
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January 2nd, 2018, 02:56 PM | #6 | |
ninjette.org member
Name: Ruben
Location: Arizona
Join Date: Sep 2016 Motorcycle(s): 2007 Ninja 250 and 1991 Yamaha Virago XV750 Posts: 228
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Quote:
At least the weather here in Phoenix has been nice. I'll let you know what I find in a few days. |
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