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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
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07-20-2008, 10:31 PM
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Motorized Bicycle Newbie
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Join Date: May 2008
Posts: 10
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Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Hi ya all,
So my fuel line doesn't fill up all the way. I finally got everything installed and ready, but the engine doesn't start.
It putters when am pedaling and slowly release the clutch, but no start.
The fuel line doesn't fill up all the way. I am thinking there some type of air trap, where the tank/line needs air in to allow for fuel down and out into the carb or something.
But if you look at the pictures below, does this setup even make sense? I mean, all I got in my kit was a fuel line that is supposed to be connected directly to a valve on the carb.; no clamp no nothing??
Any thoughts are appreciated.
Thanks,
Andrew
Last edited by jnanasakti; 07-20-2008 at 10:34 PM.
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07-20-2008, 10:36 PM
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Motorized Bicycle Elite Member
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Join Date: Mar 2008
Location: Treasure Coast, Florida
Posts: 745
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Just pinch the line a few times it will fill.....
__________________
"No such thing as a stupid question, just a stupid answer"
48cc Grubee Starfire Round Head......
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07-20-2008, 10:51 PM
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Motorized Bicycle Newbie
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Join Date: May 2008
Posts: 10
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Quote:
Originally Posted by misteright1_99
Just pinch the line a few times it will fill.....
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IT WORKS!!! IT WORKS!!!
Thanks much for the tip...now I just have to make sure the bike is equipped for all the vibration
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07-21-2008, 12:06 AM
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Master Bike Builder & Forum Sponsor
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Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,291
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Put a wire tie wrap around the carb inlet hose - it looks like fuel is spewing. I recommend losing the in tank filter and using a plastic inline filter.
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11-14-2009, 08:44 AM
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Motorized Bicycle Elite Member
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Join Date: Oct 2009
Location: michigan
Posts: 255
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Quote:
Originally Posted by Pablo
Put a wire tie wrap around the carb inlet hose - it looks like fuel is spewing. I recommend losing the in tank filter and using a plastic inline filter.
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hey pablo can i ask exactly what you mean by this? Like unscrew the petcock, and pull the p;astic piece with screen off the petcock. Also I bought a fuel filter from SBP,love that place, plan to buy alot more, but anyways, not sure if you have seen them, but they are cone shaped. I was just wondering what side is up and what is down. Right now i have to point facing down
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11-14-2009, 10:57 AM
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Motorized Bicycle Elite Member
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Join Date: Jun 2009
Location: Singapore
Posts: 194
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Quote:
Originally Posted by jnanasakti
IT WORKS!!! IT WORKS!!!
Thanks much for the tip...now I just have to make sure the bike is equipped for all the vibration 
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Enjoy your bike..
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11-14-2009, 02:58 PM
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Motorized Bicycle Elite Member
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Join Date: Oct 2009
Location: Tucson, ZonieLand
Posts: 413
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Pablo...Why do you recomend taking out out the filter in the petcock when having one hook up with the fuel line
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11-14-2009, 03:06 PM
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Master Bike Builder & Forum Sponsor
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Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,291
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Quote:
Originally Posted by Tcams_Zonie
Pablo...Why do you recomend taking out out the filter in the petcock when having one hook up with the fuel line
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Because the one in the tank will clog really easily and even unclogged can mess with fuel flow. It's a piece of junk, just like the stock valve is. The both cause problems - and the silly fuel valve can even break at the worst times....
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11-14-2009, 03:11 PM
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Master Bike Builder & Forum Sponsor
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Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,291
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Quote:
Originally Posted by rkorson4209
hey pablo can i ask exactly what you mean by this? Like unscrew the petcock, and pull the p;astic piece with screen off the petcock. Also I bought a fuel filter from SBP,love that place, plan to buy alot more, but anyways, not sure if you have seen them, but they are cone shaped. I was just wondering what side is up and what is down. Right now i have to point facing down
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Yes lose the that plastic piece.
In this picture, fuel flows left to right - this would make the point facing up. So any crud is trapped on the visible side.
From SBP's site:
Quote:
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Originally Posted by SBP
Fuel Filter
Place the fuel filter between your fuel valve on your tank and your carburetor. The pointy
end should face the tank. Be sure to take your fuel valve out and remove the stock screen.
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Last edited by Pablo; 11-14-2009 at 03:21 PM.
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11-14-2009, 03:44 PM
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Motorized Bicycle Elite Member
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Join Date: Sep 2009
Location: Texas
Posts: 597
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Re: Right Setup? - Fuel Line to Carb Fuel Valve pictures incl.
Am I the only one that noticed his valve on the tank was turned off in the picture?
I imagine by now he has figured it out though this post started over a year ago LOL
Last edited by george_n_texas; 11-14-2009 at 03:47 PM.
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