URGENT- fast tank empty

[ihasnostang]

i need to empty a full tank of gas asap. what is the fastest way.
1: does siphon work?
2: unhook supply line from HPFP and turn key on? is there a timeout for priming? jump relays?
3: unhook a line under the car somewhere and let gravity drain it?

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[K4fxd]

What did you do, fill it with diesel?

If you are tuned ask tuner for a drain tune, if not I don't know an easy way. Unhook the fuel line and run the prime 2000 times. Might be able to unhook the fuel line at the engine and place a vacuum liquid transfer pup on it and suck the fuel out.

Sorry not more help.

 

[ihasnostang]

didn't empty enough of the 93 out before filling with e85 to get tuned.

 

[K4fxd]

What 3 gallons? I wouldn't worry about it. Have your tuner tune for E50 then run the tank out then fill with E85 which unless from a can is anywhere from E56 to E85. Then tune for the entire E85. But there is no real benefit above E60 or so.

 

[Timbuck]

I had to empty old fuel out after car was sitting for a long time after engine rebuild.
I just Popped the back seat out , and hooked 12V directly to the pump drained the tank in no time.

 

[SheepDog]

YOu can also jumper the wires at the FPCM. Here is a picture of a jumper harness, but you could just use 2 wires and some alligator clips.

Then you need to disconnect the fuel line at the fuel rail or at the firewall and get some 3/8" hose that is long enough to reach the ground and go into a fuel tank.

VMP Fuel Swapping Kit (Jumper and Hose)

 

[DougS550]

i need to empty a full tank of gas asap. what is the fastest way.
1: does siphon work?
2: unhook supply line from HPFP and turn key on? is there a timeout for priming? jump relays?
3: unhook a line under the car somewhere and let gravity drain it?

Ate you FI?. Dodconnect fuel line from fuel rail, put hose over line and over to a gas jug. Disconnect fuel pump connectot and jumper with 12vdc, jumper the fuel pump relay. It won't take long.

 

[ihasnostang]

i ended up driving 1/2 of the tank out in 120 miles. then i made two jumper wires using terminals " 12048159-L ", or Waytek #30036 and that worked.

 

[DougS550]

i ended up driving 1/2 of the tank out in 120 miles. then i made two jumper wires using terminals " 12048159-L ", or Waytek #30036 and that worked.

Great to hear.

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