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Re: fuel stops flowig
And then the fuel will stop flowing thru the lines. i can see it stop thru my inilne filter. so i took the tank off and cleaned it out. check the petcock it's good and flows good. so now my only guess is a stuck float but i just went thru the carbs and check the float valve and the housing and it all looked good with lil to no ridges on the rubber points. anything else that could be causing it to stop flowing.
Sounds like your fuel tank vent is plugged. Try riding until the bike dies. Open the tank. Do you hear a hissing noise as the tank opened? Close the tank and try to start the bike.,,
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Hi David check the fuel supply from the tank. Turn off the tap then pull the pipe off the tap or carb then turn fuel on there should be a good steady flow if not there is a blockage. There is a filter in the tank you will need to remove the tank and then the fuel tap. Also check along the fuel line for blockage. And make sure the vent in the filler cap is ok. Regards Jim...
Hi Bruce, might have gotten some bad gas. Drain the tank, clean the fuel filter, check the bottom of tank for rust, dirt, water ect. Then ckeck fuel pump pressure, refill tank with a gallon of fresh gas from a different source and take it for a ride. good luck
Sounds like you have trash in your tank or line. I've seen this happen with atv's even though you believe all your fuel going in is clean, stuff can still get in unknowingly to you. I've seen a floating honey bee in a cars fuel tank cause all kinds of problems like that. Owner spent countless hours and dollars replacing sensors, solenoids, and come to find out the dead bee would stay afloat normally, but when the fuel pump pulled it into the screen, the fuel flow would either be minimal or totally stop it all together. Pull that fuel line off and turn your petcock valve on and off to see if fuel comes out good or partially. Your bike may be getting fuel fine during low speed and idle, but upon demand when more fuel is needed to accelerate, the flow is restricted somewhere and it starves the carbs. Hope this helps.
To check the diaphragm, pull the fuel line off the petcock and connect a short hose leading into a catch can. Spin the engine with the starter or crank the engine for a few seconds and watch the rate of flow. If it looks like enough fuel, then the diaphragm is probably fine. Have you checked the tank vent in the fuel cap? If the cap vent is plugged, the bike won't run but about a mile or so before it quits. Loosen the fuel cap on the right side if your bike is a Softail otherwise loosen the fuel cap but don't take it completely off. Just enough to allow air to vent into the tank and take it for a ride. If the tank is full, I'd advise draining about half the fuel out or you'll have it in your lap. Not good. You can take the cap off, wipe it good and clean and try to **** and blow through it with your mouth. I've done it plenty of times because I didn't have time to ride the bike on the road. Might need to brush your teeth afterwards, and I wouldn't smoke for while, but it'll tell you if the cap vent is bad.
Gas Cap. Sounds like the vent in the gas cap is stopped up. As the fuel flows out of the tank, a slight vacuum builds up. When the vacuum gets high enough, no fuel flow, engine dies. Let it sit for a minute or two, you get to go through the whole thing again. Kinda like the movie "Ground Hog Day". Try loosening the cap and going for a ride and see if that helps. Don't have the tank completely full. You don't want a lap full of gasoline. That could get uncomfortable fast. Oh yeah, I wouldn't advise smoking either or you'll look like the "Ghost Rider".
If you're running a fuel filter inline, this could be a problem as well. If you've gotten hold to some nasty gas, it could have your fuel filter nearly stopped up.
Also, you're bike is equipped with a vacuum operated petcock. The vacuum from the engine opens the petcock. I've seen lots of these petcocks fail. Check it with a hand operated vacuum pump or replace it with a pre-1994 model. I like Pingle petcocks the best.
I would recomend checking to be sure the fuel and vacum lines n the tank are installed correctly, Open the fuel filler and start the bike and see if it has any change on the problem, if so you have a vacum issue.
You'll have to check a manual for the location of the tank vent. Many have a vent in the cap, but not all of them do. A clogged vent will prevent fuel from flowing out of the tank after it's been running normally for 10-20 min.
The fact that you see the fuel flow stopping in the line/filter, pretty much rules out the carb floats, doesn't it? The problem has to be in the tank, petcock or fuel line.
You mentioned that you have another tube going into the petcock. That would indicate that you have a vacuum operated petcock. If the vacuum line is leaking, it could restrict fuel flow. Also if the vacuum diaphram inside the petcock is damaged, same deal. Just about all vacuum petcocks have a position labeled "prime". You can bypass the vacuum function by using this setting. Next time the fuel stops flowing, put the petcock in the "prime" position. If you see the fuel start to flow, then your problem is likely in the vacuum line or the diaphram.