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Old April 21st, 2013, 08:37 PM   #1
Monkeytofu
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Strange fuel leak from carbs

Hey guys, no idea where this leak is coming from so I recorded a video of it. Happened after I put my gas tank on the bike and only happens when my bike is running:

Link to original page on YouTube.

Do I need to empty the bowls? It's not from the tank as looked over the whole thing to check for leaks.

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Old April 21st, 2013, 08:54 PM   #2
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Quote:
Originally Posted by Monkeytofu View Post
Hey guys, no idea where this leak is coming from so I recorded a video of it. Happened after I put my gas tank on the bike and only happens when my bike is running:

Link to original page on YouTube.

Do I need to empty the bowls? It's not from the tank as looked over the whole thing to check for leaks.

Only one way to find that leak is to take it apart.
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Old April 21st, 2013, 08:59 PM   #3
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There is a gasket on the float bowls so I'd check that It may be cracked or installed improperly. Check the fuel lines to the carbs too; follow them from the gas tank to the carbs. See if there is any cracking or hoses that are fully secure. Probably should try that before pulling the crabs to check those gaskets.
EDIT: Could start by draining the fuel out too. You might have something clogging the system up or a stuck float too. Is the fuel coming from the carb vent? Can't really tell from the vid
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Old April 21st, 2013, 09:22 PM   #4
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Quote:
Originally Posted by 00NissanNinja View Post
There is a gasket on the float bowls so I'd check that It may be cracked or installed improperly. Check the fuel lines to the carbs too; follow them from the gas tank to the carbs. See if there is any cracking or hoses that are fully secure. Probably should try that before pulling the crabs to check those gaskets.
EDIT: Could start by draining the fuel out too. You might have something clogging the system up or a stuck float too. Is the fuel coming from the carb vent? Can't really tell from the vid
All I can see is fuel dripping off that point in the video. If the carb vent is that yellow tube, then no it's not. It's dripping off the metal piece that covers the idle dial.

I'll take it apart tomorrow when I have better lighting, just didn't have this issue a couple days ago.
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Old April 21st, 2013, 09:37 PM   #5
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best way to rule out a leak from a fuel line is to un hook them your bike will run for a few min with out them hooked up and with just the gas in the carbs.
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Old April 22nd, 2013, 08:24 PM   #6
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I could be wrong I haven't had mine apart in a while but isn't there a plastic T that feeds fuel to each carb I've seen the little o ring on the T fail and leak like that
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Old April 23rd, 2013, 06:16 AM   #7
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I Betcha it's the float bowl gasket leaking.
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Old April 23rd, 2013, 06:24 AM   #8
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Quote:
Originally Posted by Monkeytofu View Post
.........only happens when my bike is running..........
The float-valve doesn't close correctly while vibrating.

Either the valve is hardened or the float is rubbing against something.

...........I could be wrong, though.
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