SuzukiSavage.com - fuel overflow

pokerpuss YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 20	fuel overflow 07/18/20 at 14:20:56 fuel is pouring out of the left side "hose" I cleaned the carb and inspected the float and needle valve, valve... got it running!!!! rode about 10 miles or so and now gas POURS out of the overflow... HELP
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Gary_in_NJ Serious Thumper Offline LS650 Cafe Racer Posts: 2625 Amongst the Twisty Roads	Re: fuel overflow Reply #1 - 07/18/20 at 15:20:39 Did you inspect the o-ring at the needle valve seat? If it’s dry, cracked or shrunken you’ll have a leaking carb.
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pokerpuss YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 20	Re: fuel overflow Reply #2 - 07/18/20 at 16:35:38 it all looks good. i can shake the float and hear just a slight rattle. i have it immersed in water and no bubbles. I'm looking for the easy answer, but I pulled the carb out again... everything looks fine.
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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 17802 Camp Springs, Kentucky Gender:	Re: fuel overflow Reply #3 - 07/18/20 at 17:03:23 Did you put the float back in right side up?
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: fuel overflow Reply #4 - 07/18/20 at 18:14:15 What was done to it before it started losin gas?
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ohiomoto Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2681 WTF is JOG?	Re: fuel overflow Reply #5 - 07/19/20 at 07:36:07 Make sure the needle seat is not loose. You may need a new needle. I think there should be an o-ring on the seat as well.
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pokerpuss

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Re: fuel overflow
Reply #6 - 07/19/20 at 12:14:59

okay, I got the bike from a friend and it wasn't running. took the carb off and cleaned it. put it back together and it ran well for about 10 miles.
I know it "runs".
I'm gonna replace the float needle and float needle assembly.
it was really gummed up before so hopefully replacing them will fix everything.

The o-ring is stiff. not at all pliable.

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justin_o_guy2

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Re: fuel overflow
Reply #7 - 07/19/20 at 12:36:33

Well,, check oil,, because a flooded carb often times runs fuel in the jug and into the oil,,
The petcock shouldnt be allowing fuel past without vacuum, so,
Raptor petcock
FROM Yamaha, not soe 12 dollar knockoff,, outlet sizes are too small,,

Before I bought carb parts Id be in it and inspecting with a magnifying glass and good light..
or dump money and get everythng that can cause it,

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pokerpuss YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 20	Re: fuel overflow Reply #8 - 07/24/20 at 14:41:16 found rebuild kit on amazon for less than $25. gonna try replacing the needle valve assembly and valve. I think it is the O ring on the needle valve assembly. parts are arriving next week.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: fuel overflow Reply #9 - 07/24/20 at 15:46:54 I think it is the O ring on the needle valve assembly. It's that or a stuck or sunk float.
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pokerpuss YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 20	Re: fuel overflow Reply #10 - 07/28/20 at 17:15:31 ?... Is it possible, that if the bike sat for any length of time with the petcock in prime position, fuel may spill into the engine and air box?
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ohiomoto

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Re: fuel overflow
Reply #11 - 07/28/20 at 18:50:20

Yes. It happens all of the time. That's why most of us use Yamaha Raptor petcocks and turn them to the OFF position anytime the bike will sit for more than a few hours. I pretty much turn mine on and off every time I throw a leg over the bike.

An ounce of prevention is worth a pound of cure. (That statement applies to COVID-19 as well. Wear your masks people!)

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pokerpuss

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Re: fuel overflow
Reply #12 - 07/30/20 at 13:27:16

thanks for that info!
makes sense to have a positive "off"
every bike I've owned had on, off, reserve.
new to me is a vacuum that shuts off gas flow.
BUT...I still have fuel coming out of the overflow when I try to start it.
I truly believe the float and needle and needle valve assembly are fine.
what I think is happening, is, the evaporative emission control system is allowing raw fuel to go through the system and right back into the carb?

It is a california model with a charchoil canister. the one and only drain tube under the bike which I thought drained the air box had gasoline in it.
it doesn't drain the airbox, so I figure it drains the charcoal cannister.

when I pulled the fuel tank I had fuel coming out of the hose at the very upper end of the fuel tank.
clymers page 204 figure 70, #3. hose #3.
clymers page 205 figure71.... I think they call it "charge hose"

anyone familiar with California emissions?

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28754 L.A. California Gender:	Re: fuel overflow Reply #13 - 07/30/20 at 13:44:52 I think the carb port from the carbon can leads into the throat. so an overflow out the vents would be highly unlikely. If you have gas coming out the vents, there's only one cause... float valve. and you shouldn't filling the tank beyond the bottom of the fill tube.
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norm92de

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Re: fuel overflow
Reply #14 - 07/30/20 at 14:02:18

pokerpuss,
There shouldn't be any fuel coming out of the hose attached to the fuel tank it vents into the canister to prevent emissions. It is supposed to be above the fuel level and only air should be in it.

If you have fuel coming out of that hose something is wrong but I don't know what since I don't have a California bike.

Are you in California? If not I would consider removing the whole system. And blocking the tank vent. I also think the fuel filler cap doesn't "breathe" like our bikes do.

Versy is right about not over filling the tank.

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