| Gas Tank Switching Valve Conundrum [message #334366] |
Sun, 01 July 2018 19:03  |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma:
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Senior Member |
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I am in the process of re-plumbing my fuel hoses from the tanks to the front hard fuel line. Part of what I am doing is to move the lines, pumps, filters, etc to the outside of the frame at Jim Kanomata's suggestion. I am also replacing the electric fuel pump (a solenoid type pull through pump) with the GMC Net preferred Carter along with a cartridge type filter and a new tank selector valve.
My plan is (was?) to run the new fuel pump off of the auxiliary tank only, like I had my old one set up. The problem is that the tank selector valve says to NOT pressurize the inlets. The only way I can think of to run it that way is to pressurize the inlet to the valve by putting the pump between the tank and the valve. Since there are two inlets on the valve and only one outlet, I can't think of any other way to do it besides running the electric pump all the time.
The old set-up I have had on the coach for years puts pressure on the inlet side of the valve, on the aux inlet, and it has worked fine. Can anybody give me a reason this will not continue to work as it has in the past? Is there a danger to "pressurizing the inlet" or any reason I shouldn't do it, other than the obvious, the warning on the instructions.
I'm already two thirds of the way through this project and don't want to have to start again.
Thanks
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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