Fuel delivery GV250 carbs

[Mike Edmunds]

cof

cof

cof

I dont know if Ive done this correctly! The lower picture is, I presume, the fuel pump. Can anyone tell me how it works?!! The top 2 are pipes which just hang down under the bike. Are they just vents?

[Mike Edmunds]

In the 2nd pic, it is the thin tubing with the “T” connection that I mean.
Also, is there any way to test the pump (?) other than see if fuel comes out of the tube to carbs?

[♠️ MARCEL]

Mike Edmunds wrote:

FUEL OVER FLOW TO THE ROAD / GROUND

 

 

FLOAT BOWL MINI HOSES = FUEL DRAIN  (To do this before removing carbs)
It dangles down to the road.

See this link on how to drain fuel before removing carbs

[Tutorial] How to swap Carb Main Jets – Hyosung GV & GT 125/250

 

 

Last picture….  FUEL PUMP yes correct 🙂

“GREY PORT” = Vacuum input from intake rubber pipes.

“GOLD PORTS”  ====> They have an arrow marked for fuel direction as you can see in the image

Now , please look at this tutorial below to help route the “fuel” pipes (gold ports only)

Please ignore the fact it is GTR 1255cc , it uses the same pump as a GV250 carby , Korea just moved the pump to another location

https://hyoriders.club/forums/topic/fuel-lines-hyosung-gt125r-gt250r-carb-hose-diagram/

When the engine is cranking , make sure the fuel tap from your tank is switched on , and within  5 seconds (max or else starter motor overheats & more wear in the crank)
You will see the fuel shoot out of the pump in to a bucket when you point the hose down to it   (the same hose that is meant to send fuel to the carb itself)

 

Hope this helps ?

// Meditation doesn't mean you have to sit still....

[Mike Edmunds]

♠️ MARCEL wrote:

Mike Edmunds wrote:

FUEL OVER FLOW TO THE ROAD / GROUND

FLOAT BOWL MINI HOSES = FUEL DRAIN (To do this before removing carbs) It dangles down to the road. See this link on how to drain fuel before removing carbs

[Tutorial] How to swap Carb Main Jets – Hyosung GV & GT 125/250

Last picture…. FUEL PUMP yes correct “GREY PORT” = Vacuum input from intake rubber pipes.

“GOLD PORTS” ====> They have an arrow marked for fuel direction as you can see in the image Now , please look at this tutorial below to help route the “fuel” pipes (gold ports only) Please ignore the fact it is GTR 1255cc , it uses the same pump as a GV250 carby , Korea just moved the pump to another location

https://hyoriders.club/forums/topic/fuel-lines-hyosung-gt125r-gt250r-carb-hose-diagram/

When the engine is cranking , make sure the fuel tap from your tank is switched on , and within 5 seconds (max or else starter motor overheats & more wear in the crank) You will see the fuel shoot out of the pump in to a bucket when you point the hose down to it (the same hose that is meant to send fuel to the carb itself) Hope this helps ?

Quote

♠️ MARCEL wrote:

Mike Edmunds wrote:

FUEL OVER FLOW TO THE ROAD / GROUND

FLOAT BOWL MINI HOSES = FUEL DRAIN (To do this before removing carbs)
It dangles down to the road.

See this link on how to drain fuel before removing carbs

[Tutorial] How to swap Carb Main Jets – Hyosung GV & GT 125/250

Last picture…. FUEL PUMP yes correct

“GREY PORT” = Vacuum input from intake rubber pipes.

“GOLD PORTS” ====> They have an arrow marked for fuel direction as you can see in the image

Now , please look at this tutorial below to help route the “fuel” pipes (gold ports only)

Please ignore the fact it is GTR 1255cc , it uses the same pump as a GV250 carby , Korea just moved the pump to another location

https://hyoriders.club/forums/topic/fuel-lines-hyosung-gt125r-gt250r-carb-hose-diagram/

When the engine is cranking , make sure the fuel tap from your tank is switched on , and within 5 seconds (max or else starter motor overheats & more wear in the crank)
You will see the fuel shoot out of the pump in to a bucket when you point the hose down to it (the same hose that is meant to send fuel to the carb itself)

Hope this helps ?

Quote

[Author]

Posts