"bob haller" wrote in message
...
On Jan 26, 3:35 pm, "Existential Angst" wrote:
Awl --

Thanks to Bob Haller -- and other input, of course -- I found a dert
simple
way to do this, with no ill effects to the car's pyooter or anything else.

Rather than fool with the pressurized supply line (the shrader valve bob
spoke of), I found the *return line* to the gas tank, and used that line.
You can distinguish the two by squeezing either with a pliers -- the
supply
line (to the engine) will shut down the engine in very short order, while
the return line back to the tank does not. In fact, squeezing the return
line speeds the engine up slightly, which makes sense.

Now, in this scenario (running the engine), you wouldn't want to use the
supply line to the engine, bec you could easily starve the engine of fuel
in
this transfer process, whereas the return line to the tank does not affect
the engine one whit.
However, if you are careful, you might have better results from the
pressurized supply line, being watchful of the engine idle. I opted for
the
"safer" return line.

So I cut the return line (the short section that is rubber), turned on the
engine, and lo and behold, boucou fuel -- on the order of a quart in about
20 secs. For the benefit of the Butt Bros George and JoeBlow, dats 3 qts
per min, 3/4 gal/min, or about 45 gals/hr -- not too bad. I hope the Butt
Bros were able to follow that.....

Now, the other scenario is, if you are able to jump the fuel pump (which
seems to operate off a relay), then you can tap into either line, cuz you
don't need to turn the engine on. You may get a higher flow rate by using
the supply line with the engine off. And some cars may start the fuel pump
just with the ignition on, which would be nice for this.

So after filling a qt, I hose-clamped the tube together with a barbed
coupling, until I can put in a T + ball valve.
This hose is hose-clamped at either end to metal tubing anyway, no fancy
fittings like on the pressureized supply.
If I can jump the fuel pump relay, I might fool around with the
pressurized
side, but the fittings on the end are pretty substantial, so the hose may
not be amenable to simple hose-clamping -- altho both the supply and
return
hoses appear to be the same type of hose.

So this is a really elegant solution to transfering gas, at least from the
truck to some other vessel. I'll figger out a way to nicely transfer
stored
gas to the truck, and it seems like a submersible automotive fuel pump
would
be a safe way to go, altho manual pumps are certainly viable.

If this works out, I may bump up my li'l doomsday storage depot to mebbe
1,000 gals.....
The Butt Bros on Doomsday: Please, Sir, may I have more gas from your
return line?????
--
EA

all the vehcles I ever owned with pumps in the tank turn the pump on
when you turn the ignition key on, after all fuel must be at the
engine at start up....

get in your vehicle, turn key, you will hear noise for a moment till
the fuel is up. its a normal part of vehicle operation..... once the
pressure gets up the pump shuts off........ all automatically.

you could probably buy a fuel pump tester with the schrader valve and
cut the pressure gauge off, and use that hose for a fuel line
================================================== =

The pump was f'sure not turning on with the ignition, but mebbe that was
because the line was already pressurized from earlier startups.

I'll test this by just separating the hoses relieving any pressure, and see
if the pump runs on ignition only.
I might have to cut the supply side to make this work, tho. But hopefully
it will work on the return side as well -- will proly depend on what/where
is supplying the back pressure.
--
EA