Draining Gas Tank
#1
Draining Gas Tank
Ok, I posted this in the Fuel forum but am not getting any response ... Any tips for the best way to drain the gas tank? I need to remove about 10 gallons. I plan to remove the line at the fuel filter, slip a hose over the line and drain it into some gas containers. I presume I should leave the cap on to maintain pressure. Should I turn the ignition on to run the pump or just leave it off? Any other tips or ideas? Thanks for any advice.
#2
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you can try it that way, but the pump only comes on for about a second when you turn the key on. It will keep pumping if you crank the engine, I believe, but thats probably not the best way to do it. The only real way that I found was either to drive it, or syphon it.
#5
TECH Senior Member
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Originally Posted by Marc 85Z28
Do like you stated.
Then remove the fuel pump relay and jump the terminals on the switched side of the relay.
Then remove the fuel pump relay and jump the terminals on the switched side of the relay.
We placed a hypertech fuel pressure gauge on the end of the fuel rail, then removed the gauge from the end of the hose. Stuffed the hose in a gas can, put an aircraft breaker between the relay terminals and switched it on (a jumper wire can work too, just watch for sparks around the fuel vapors). It pumped the whole tank dry in about 15-20 minutes (as I remember, but this tank was completely full, the car was towed from the gas station.....).
Be careful when working with fuel, we don't want any accidents or explosions.
#6
Originally Posted by RevGTO
Ok, I posted this in the Fuel forum but am not getting any response ... Any tips for the best way to drain the gas tank? I need to remove about 10 gallons. I plan to remove the line at the fuel filter, slip a hose over the line and drain it into some gas containers. I presume I should leave the cap on to maintain pressure. Should I turn the ignition on to run the pump or just leave it off? Any other tips or ideas? Thanks for any advice.
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how about disconnecting the fuel filter, rigging a hose, and KOEO pumping it into something?