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Gas pouring out of my air cleaner

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Gas pouring out of my air cleaner

PostAuthor: Toaview » Mon Sep 10, 2018 7:58 pm

Hello,

I let my 1100 sit for @ 2 months this summer; when I left it it was running fine. I came back last week, turned the ignition to on, heard the pump clicking away, and suddenly, before hitting the start button, smelled and then saw gas pouring out of the bottom of the air cleaner housing. I pulled the housing off and tried to trace the hose back from which the gas was coming. Can't quite see its origin, but it has a 90 degree bend to the right, with a metal sleeve at the bend. I tried clearing the hose but found no obstruction, I even blew on the hose, and heard bubbling in the tank. I tapped gently on each float bowl, no go. Any idea what's going on?

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Re: Gas pouring out of my air cleaner

PostAuthor: Cusstout 1100 » Mon Sep 10, 2018 8:08 pm

The gas is coming out of the vent for the top of the carb(s). One or both of your float seats is not closing, or an o ring on the float seat has failed. The pump will continue happily pumping gas because the float bowl is not filling and causing back pressure for the sensor to pick up and tell the pump to shut off. (At least that's what I'm dealing with on my 1100 right now, and in my case, it's a failed o ring on the rear carb float seat.)
My Ride, '97 XV1100, +14, 10" over forks, progressive rear, Jardine forward controls, cobra slip-ons, K&N Filter, Dyno Jet Stage 1, Kuryakin grips, heat demon heaters, custom fabricated seat, chrome side covers, bullet signals, risers, custom modified rear fender with modified FZ1 tail light, sectioned and reversed front fender, custom paint...

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Re: Gas pouring out of my air cleaner

PostAuthor: bstig60 » Tue Sep 11, 2018 10:43 am

When you blow on the fuel line and hear bubbling in the tank that is a sure sign of a float valve stuck open. Try using a screw driver handle and firmly tap on both carb bowls and see if that corrects the problem..
Bill
"It´s a friggen motorcycle, it´s not supposed to be comfortable, quiet or safe. The wind noise is supposed to hurt your ears, the seat should be hard and riding it should make you s**t your pants every now and then. "

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Re: Gas pouring out of my air cleaner

PostAuthor: Toaview » Tue Sep 11, 2018 12:37 pm

Thanks to both of you for the replies. So, I've tapped on both float bowls, still not happening. Next question: how much vigor should I use in tapping? I don't want to jamb the float any more than it apparently is already. And if the tapping doesn't work, what's my next step? Do the carbs need to come out to repair this? Also, would it help to remove the tank and attempt to work some carb cleaner into the carbs?

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Re: Gas pouring out of my air cleaner

PostAuthor: Cusstout 1100 » Tue Sep 11, 2018 2:31 pm

Here's something you can try. On the bottom of the float bowl, there's a drain nipple, the screw to open it is on the outboard side of the bowl near the bottom. Either stick a hose onto the drain nipple, or have a container under it to catch the gas when you open the screw that opens the drain. do that on both carbs. Leave the screw/drain open (remove the drain hose if you've used one) and take a can of Seafoam Deep Creap, using the tube that comes with it - it's an aerosol can- and push the tube up as far as you can into the nipple, hold it in place and spray as much as you can into the float bowl chamber. Remove the tube and quickly close the drain screw. Do that to both carbs and let them sit for a while - overnight would be nice. Then turn the key on and see what happens with the pump - it should shut off after a few seconds, but with the bowls being relatively empty, you may have to turn the key off and on a few times to fill the bowls. If the pump shuts off, the float needles should be seated and you may have cured the problem.
My Ride, '97 XV1100, +14, 10" over forks, progressive rear, Jardine forward controls, cobra slip-ons, K&N Filter, Dyno Jet Stage 1, Kuryakin grips, heat demon heaters, custom fabricated seat, chrome side covers, bullet signals, risers, custom modified rear fender with modified FZ1 tail light, sectioned and reversed front fender, custom paint...

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Re: Gas pouring out of my air cleaner

PostAuthor: Toaview » Tue Sep 11, 2018 2:36 pm

Got it. I'll give it a try and get back asap. Thanks.

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