I have a 2001 XK8 that has been sitting for awhile. I would like to drain the fuel tank. Syphon does not seem to work very well. Is there a way to pump the fuel out of the tank using the fuel pump?

 

Start the engine and let it run. Why do you want to drain it?

 

Put your siphon hose in and place a rag around the hose sealing the filler hole. Poke your air nozzle in through the rag and blow a little air in. It will start siphoning asap!

 

The reason I want to drain the tank is because the car has been sitting for two years after an engine failure. I do not want to run the new engine with the old gas.

 

You can disconnect the fuel rail supply hose in the engine compartment and get a hose to a large container.
Then jump the relay socket (30/87 or 3 and 5) terminals with a short length of wire to run the fuel pump without the engine running.

The relay is in the boot fuse/relay box behind the battery.
The relay position is..X

OOO
..X
..O
..O
..O

bob gauff

 

I believe the fuel rail supply is under the fuel rail shown here. I think this is the return line and I can disconnect it and connect a rubber hose to the brown tubing to drain the tank using the fuel pump. And no need to plug the female receiver on the fuel return line.
Is that correct?

 

Getting wire in plugs difficult so i broke open an extra relay.

 

Do you have a pic of how you added tubing?

 

I disconnected the fuel filter and pumped it from the rearmost pipe.

 

I pulled the return line from connect and attached a rubber hose then used a switch connected to relay contacts. Just over 9 minutes for 5 gallons​​​​​​​