Re: [Nighthawk Lovers] Re: Fuel Shut off Valve

2016-04-14 Thread David Basinski
Let me rephrase the question. If you remove the tank from the bike and turn on the petcock, then fuel should not flow. I assume that this is because of the vacuum dependent feed. During prolonged periods of storage, I like to run the carbs dry. Turn off the petcock and let her run. Just wondering

Re: [Nighthawk Lovers] Re: Fuel Shut off Valve

2016-04-13 Thread 'Ross M. Jamison' via Nighthawk Motorcycle Lovers!
My understanding has been that pressure from that fuel can/will put a ring groove of the needle as it sets against the seat of the jet. I almost always turn my fuel off. I forgot to this summer & that is part of the problems I am having now. Will idle but not accelerate. Carb #4 is screwed up.

[Nighthawk Lovers] Re: Fuel Shut off Valve

2016-04-13 Thread Tommy Hill
No. The vacuum, or technically the lack thereof, allows the valve to close and stops fuel from flowing downhill into the bowls. IF the float valves are perfect, it shouldn't allow fuel to bypass...but they do! That can flood, run into the cylinders, and past the rings into the oil and ...BOOM!

[Nighthawk Lovers] Re: Fuel Shut off Valve

2016-04-13 Thread David Basinski
Was wondering is it overkill to have a petcock and a vacuum feed? Since fuel only flows when the engine is running, doesn't it automatically shut off when the engine is turned off? On Tuesday, April 12, 2016 at 12:55:11 PM UTC-5, Tom La Fleur wrote: > I found a problem with the fuel shut off