In-tank fuel pump question...

[KOwens]

Finally got my backordered in-tank fuel pump/sending unit and will replace it tomorrow. Had a couple of questions related to the pressurized fuel line from the tank to the fuel filter in the engine compartment.

1) Is this fuel line pressurized with the ignition off?

2) If so, does letting some fuel out of the "water in fuel drain petcock" in the fuel filter housing release this pressure?

3) Finally, will the fuel line syphon or drain remaining fuel in this line back toward the tank once the fuel line is disconnected from the pump module at the tank?

Just trying to get a read on whether it will spray fuel if just disconnected...and once any pressure is relieved, will it continue to drain out of this disconnect line.

Thanks for any information you can provide...appreciate the help. Kevin

 

[AH64ID]

When I installed my Titan tank I drained all pressure and residual fuel from the lines using the WIF drains. There wasn’t much, if any, pressure but there is plenty of fuel that will drain back from the filter to the pump unit. Have a container and some absorbent pads ready.

 

[KOwens]

Hey AH64ID...yeah I swapped out the unit yesterday and did the same...drained a little fuel from the filter WIF housing, closed the petcock, and then disconnected the fuel line from the in-tank pump/sending unit. Very little fuel drained back toward the tank, only a few drops that I collected using a rag. All in all, a pretty easy procedure...with pretty good access via the wheel well, once I removed the left-rear tire and wheel, removed the fender skirt, and finally removed the fuel filler neck and a fender support rod assembly. This makes reaching the quick disconnect fuel line connectors and the single electrical connector pretty straight forward. For those of you performing this procedure in the future...keep in mind the fuel pump/sending unit is spring loaded and the retaining ring takes some force to rotate to remove. It seemed pretty violent when mine finally broke free using the special lock ring tool, breaker bar, and an 18" cheater pipe that I placed over the breaker bar handle. It surprised the heck out of me for sure. Good luck and thanks for the help. Kevin