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Author Topic: 2007 gt250 fuel pump hoses  (Read 126 times)

Devan005

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2007 gt250 fuel pump hoses
« on: June 12, 2018, 01:44:45 AM »

Hey I just bought this bike, it's a hyosung gt250, it was all taken apart when I bought it and I finally have it back together for the most part, I just can't seem to figure out where one hose goes to, please help me out can't figure out how to post pictures but the hose goes into the vacuum fuel pump, the arrow is pointing in towards the pump, I don't know where the other end connects to.
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Devan005

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Re: 2007 gt250 fuel pump hoses
« Reply #1 on: June 12, 2018, 12:30:31 PM »

 If anyone can take pictures of exactly where the vacuum fuel pump hoses go to it would be greatly appreciated
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umop-ǝpisdn

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Re: 2007 gt250 fuel pump hoses
« Reply #2 on: June 12, 2018, 01:00:57 PM »

I seem to recall seeing several pictures in the past.

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Joss

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Re: 2007 gt250 fuel pump hoses
« Reply #3 on: June 12, 2018, 03:14:17 PM »

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Devan005

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Re: 2007 gt250 fuel pump hoses
« Reply #4 on: June 12, 2018, 10:41:58 PM »

I keep seeing people say that the hose i'm referring to goes from the front cylinder to the pump, I can't seem to find pictures as to where it hookanuo to the front cylinder, I don't have a nipple for the hose to go to anywhere on my front cylinder..
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Christianleon266

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Re: 2007 gt250 fuel pump hoses
« Reply #5 on: June 13, 2018, 12:14:10 AM »

Front Cylinder carb boot, the rubber intake nipple.
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2007 Kawasaki KX250F
1984 Yamaha Virago
1982 Honda V45 Sabre
1996 Kawasaki ZX6R
2009 Kawasaki Ninja 250
1984 Honda V65 Magna (Favorite)
1982 Kawasaki KZ750E
2005 Suzuki M50
1983 Honda Goldwing Aspencade
2007 Hyosung GT250R
1991 Honda ST1100 (current)

Devan005

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Re: 2007 gt250 fuel pump hoses
« Reply #6 on: June 13, 2018, 07:14:15 AM »

Okay so coming off of my vacuum fuel pump I have 3 hoses one goes directly to the carbs, another one goes to both the carb intake boots with a t in the middle, and the third one I can't find where it goes, but I know it need pressure going into it to run, I turned it over and blew air into it and the bike started and ran perfect, just can see where it goes
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Christianleon266

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Re: 2007 gt250 fuel pump hoses
« Reply #7 on: June 13, 2018, 09:08:23 AM »

If that Tee is in the middle of the carb intake boots, and connecting the vacuum pulses between them, that isn't the stock config. If you ever do a carburetor sync youll have to cap one of the intake boots off and just use one for the pump, bridging them makes the sync worthless. That being said, you should have fuel coming into the pump from the fuel petcock (the arrows reference the direction of flow), a vacuum source from ONE of the intake boots, and and a line going directly into the carb nipple on the rear cylinder. . . the pulses suck and release a diaphragm that works two one way valves, pulsing fuel into the bowls. Take a photo of what your set up is.
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2007 Kawasaki KX250F
1984 Yamaha Virago
1982 Honda V45 Sabre
1996 Kawasaki ZX6R
2009 Kawasaki Ninja 250
1984 Honda V65 Magna (Favorite)
1982 Kawasaki KZ750E
2005 Suzuki M50
1983 Honda Goldwing Aspencade
2007 Hyosung GT250R
1991 Honda ST1100 (current)

Christianleon266

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Re: 2007 gt250 fuel pump hoses
« Reply #8 on: June 13, 2018, 09:10:43 AM »

Blue is carburetor float bowl vent lines, should route to right and go to atmosphere (connect to nothing.)
Red is fuel line from carb, to pump, to filter then tank.
Purple is vacuum lines for AIS, petcock, and pulse pump.
Green is drain from bowls.
Yellow is AIS air supply line.

Credit to Caligonetx for his photo, I do not have a camera otherwise I would take a photo of my carbs.
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2007 Kawasaki KX250F
1984 Yamaha Virago
1982 Honda V45 Sabre
1996 Kawasaki ZX6R
2009 Kawasaki Ninja 250
1984 Honda V65 Magna (Favorite)
1982 Kawasaki KZ750E
2005 Suzuki M50
1983 Honda Goldwing Aspencade
2007 Hyosung GT250R
1991 Honda ST1100 (current)

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