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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> fuel overflow /cgi-bin/YaBB.pl?num=1595107256 Message started by pokerpuss on 07/18/20 at 14:20:56 |
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Title: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by Gary_in_NJ on 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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Title: Re: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by Dave on 07/18/20 at 17:03:23 Did you put the float back in right side up? :-? |
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Title: Re: fuel overflow Post by justin_o_guy2 on 07/18/20 at 18:14:15 What was done to it before it started losin gas? |
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Title: Re: fuel overflow Post by ohiomoto on 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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Title: Re: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by justin_o_guy2 on 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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Title: Re: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by justin_o_guy2 on 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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Title: Re: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by ohiomoto on 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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Title: Re: fuel overflow Post by pokerpuss on 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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Title: Re: fuel overflow Post by verslagen1 on 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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Title: Re: fuel overflow Post by norm92de on 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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Title: Re: fuel overflow Post by pokerpuss on 07/30/20 at 14:03:59 it only spits out when trying to start it. raw fuel is coming out of the drain tube under the bike? where would that be coming from? |
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Title: Re: fuel overflow Post by pokerpuss on 07/30/20 at 14:13:12 good advise not overfilling. I just don't have the know how to figure it out. cleaned the carb replaced air filter, new spark plug... ran great for 10 miles? can't go 2 blocks and it sputters out. |
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Title: Re: fuel overflow Post by norm92de on 07/30/20 at 14:15:30 If you have fuel flowing out of the vents Versy is right. A float problem is probably it. |
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Title: Re: fuel overflow Post by verslagen1 on 07/30/20 at 14:15:50 the 2 vent tubes from the carb should be pointed up into the square tube of the frame. the drain tube under the bike is from the airbox. if it's coming from there, check float valve and petcock (if vacuum) the vacuum port of the petcock can fail and gas will flow into the carb. Then check your oil for gas too. |
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Title: Re: fuel overflow Post by ohiomoto on 07/30/20 at 14:31:09 617E7A746361646262110 wrote:
That's classic petcock symptom. The other crap, I don't know. |
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Title: Re: fuel overflow Post by pokerpuss on 07/30/20 at 14:37:25 thanks for replying so quickly!!!! I am gonna ask... if I put the tank back on, and open the petcock to prime, and no fuel overflows. can I assume the float, needle and needle valve assembly are good? I replaced them with a carb rebuild kit from amazon. I have the boot from the back of the carb.off now. would that tell me anything? |
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Title: Re: fuel overflow Post by stewmills on 07/30/20 at 15:01:18 4D5256584F4D484E4E3D0 wrote:
For the most part, yes. Prime bypasses the vacuum need and allows fuel to flow into the carb bowl by gravity, and if your float, needle valve, etc. are not working properly and seated then here comes the overflow of fuel! If not, you win! You may also want to check your float height to make sure that none of the new parts got your float height out of whack. Usually it doesn't, but it is an easy thing to check with a small piece of clear fuel hose...the small stuff like what is used for weedeaters, etc. |
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Title: Re: fuel overflow Post by ohiomoto on 07/30/20 at 17:58:43 Classic case of fixing the wrong problem. If the diaphragm on your petcock is shot, fuel can flow through the vacuum line and bypass the float bowl. Plug the vacuum lines on the carb and petcock. Run it on prime. |
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Title: Re: fuel overflow Post by ohiomoto on 07/30/20 at 18:04:15 594A5D5C434E484A411E2F0 wrote:
-------------------- This! |
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Title: Re: fuel overflow Post by pokerpuss on 07/31/20 at 09:21:31 Thanks all! I will get back to it. QUESTION...clear hose for checking float height... I assume hook it to drain and let gravity do it's thing? where should the fuel level be? when I replaced the needle valve assembly I measured it. it was middle of tolerances... about 1.1" |
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Title: Re: fuel overflow Post by norm92de on 07/31/20 at 11:17:39 The standard fuel level height is 7MM. below the flange. It is very sensitive to the slightest change in the lean angle. I measured mine at 5MM and didn't change anything. It runs great. The measurement you quoted is the float height: My comment above is as measured with a plastic hose held beside the carb. |
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Title: Re: fuel overflow Post by pokerpuss on 07/31/20 at 11:58:58 have the carburetor in hand, i'm blowing air into it, and it gradually decreases "air flow" until the bottom of the float is level with the stem of the pilot jet....then it cuts off completely. again, I'm assuming, that is what it's supposed to do. needle valve does cut off the flow. So now, I want to put it back together and see what happens!!! any thoughts before install the carb. and send fuel to it. I'm gonna try filling it with fuel before I put everything back together |
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Title: Re: fuel overflow Post by norm92de on 07/31/20 at 12:45:55 With the bike absolutely level plug a clear plastic tube onto the float bowl drain. Holding the tube beside the float chamber pointed upwards the fuel level should stabilize at about 7MM below the bowl joint. If you set the float height at the 1.1" level before you do this it should be correct. As I mentioned mine came out at about 5MM and runs just fine. You won't need to put any fuel in it before you put it back on the bike gravity will take care of that for you. When Suzuki designed the fuel system maybe they weren't aware of the ethanol in our fuel. Ethanol ruins the diaphragm in our carbs and petcocks well as any other device it come into contact with. P.S. I hope that you have already installed a genuine Yamaha Raptor petcock. If not you will sooner or later. |
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Title: Re: fuel overflow Post by pokerpuss on 08/01/20 at 13:31:31 still have fuel coming out of the overflow tube. the float must not be floating? With the float bowl off, I put air pressure in the fuel intake, and manually lift the float...cuts off just fine. put the bowl on and can't see what happens, but it fills up and overflows out the "overflow" also into the throat of the carb. which I would assume was coming up the main jet. I am really frustrated... how do I check the float? should I just replace it? $50? |
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Title: Re: fuel overflow Post by justin_o_guy2 on 08/01/20 at 15:27:05 If ts not adjusted correctly,, its gonna overflow If the float is full of gas,, its not gonna float Have you held the float in your hand? Have you given it a good shake? iF its got gas on the inside of it,, thats not okay,, If the bowl is over filled before it gets to that spot where it shuts the valve \Thats not okay If Both of those things are true,, It Not okay |
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Title: Re: fuel overflow Post by pokerpuss on 08/02/20 at 12:40:40 I am gonna replace the float and if that doesn't work, I'll be trying to sell a non running 2003 new tires new battery fresh oil and filter, fresh spark plug new air filter. |
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Title: Re: fuel overflow Post by verslagen1 on 08/02/20 at 13:07:12 just roll it over here and I'll tell you what's wrong with it. |
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Title: Re: fuel overflow Post by pokerpuss on 08/02/20 at 14:38:36 I am pretty sure the float is bad... tiny bubbles when i sink it in water. When I get it running, I might bring it your way. freeway drive let it air out afraid to go more than 2 blocks, in case itneeds to be towed back. new float should arrive in a week |
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Title: Re: fuel overflow Post by norm92de on 08/02/20 at 14:48:55 Meanwhile try to solder the old one. You have nothing to lose. You would have to get any water or fuel out of it first. |
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Title: Re: fuel overflow Post by justin_o_guy2 on 08/02/20 at 15:41:35 Did you read my questions? Did you SHAKE The float? Did it have fluid in it? Does the dammm thing float? On top of water or down in it? Bubbles? Uhh,, maybe new float instead of losing a bike? You're too close to winning to consider giving up. |
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Title: Re: fuel overflow Post by pokerpuss on 08/04/20 at 10:58:48 wish I had this on video. used a bic lighter to find the hole in the float. Effective, but not recommended. had a tiny flame thrower then a tiny but scary fire got a good laugh out of it. I submerged the float and bubbles so slight they clung to the metal float. so I scraped them away trying not to make any bubbles in doing so. sure enough more bubbles. anyway, if anyone is checking for leaks in the float, be patient, bubbles never rose to the surface they just slowly appeared and stuck to the float. Took it out of the water after 20 -30 minutes and yes water was in the float. used the bic lighter again and saw the water drip. Can't see the holes even with 10x magnifier. got e-mail ... my new float is on back-ordered (no currant ETA) anyone know of a good video on How to solder a float |
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Title: Re: fuel overflow Post by verslagen1 on 08/04/20 at 14:00:45 7F60646A7D7F7A7C7C0F0 wrote:
I wish you had it too. ;D http://https://pics.me.me/thar-she-blows-man-the-harpoon-imglip-com-thar-the-50723393.png |
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Title: Re: fuel overflow Post by norm92de on 08/04/20 at 14:32:50 That's rude Versy. ;D |
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Title: Re: fuel overflow Post by pokerpuss on 08/05/20 at 12:42:13 attempted to solder the float. road it for a few miles and it seems o.k. Can't compare to anything cause it didn't run when I got it. it idles, no lag throughout throttle range, doesn't backfire. I'll have to let it soak and see if still runs in a week. thanks for all the advise everyone! |
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