Fuel stops flowing

[billquack]

Hi guys has any one had this problem?
I have a clear fuel filter on the bike and as I ride I can watch the thing empty out and the bike starts to sputter and stall.
I stop and pulled the screw out of the carb in the bottom of the bole and the fuel comes right out I can empty the tank no problem.
Put the screw back and the same thing i watch the fuel filter empty out. And no it is not a vent thing with the tank, I can take the cap off the tank as I ride and still no fuel flow.
I am very good with a wrench and been around engines all my life.
But this one has me baffled.

[steveuk]

Hi Bill Q,

i still think its a vent problem, the vent in the tank cap only vents the tank and not the fuel lines or carb (i think) the vent/bypass hose from the right hand side of the fuel tap to the bottom of the tank is the one that vents the carb and fuel iine, and tap. i would check that the vent hose, hole in the bottom of the tank and the connection on the fuel tap for any blockages.

just a thought

steve

[mike500]

try riding the bike with the fuel tap set to prime if that cures the problemif bike runs ok on prime then its the tap at fault.not opening under vacumn
regards mike

[ziggystardust]

We must assume that the vacuum pipe is connected from the inlet manifold to the petcock.

If so then I think the the diaphragm may not be working as this is what pumps the petrol to the carb, worth a look inside.

[steveuk]

when i give suggestions i assume people have checked all the basics, if you have not checked the tap diaphragm is working properly then that is most likely the problem.

steve

[billquack]

OK Guys I found the problem. It is the vent in the carb the small hole under the oil inlet. I didn't see it the first time around I thought the hole with the filter on it was the vent for the bole.
All good now the RE runs great now ;D