Quote:
Originally Posted by Irace86.2.0
Were you speaking off the cuff, or did you really mean capillary action because, unless I am misunderstanding the situation, I am failing to see how that phenomenon applies in your situation. If you are referring to the tank being filled and overflowing when you access the port then that will happen. I'm pretty sure all you have to do is syphon off a quarter tank, so the fuel is at or below the height of the access port. There should be no need to drain the tank completely. If you are referring to fuel vapor pressure causing fuel to spray everywhere then that seems less likely if you have a functioning EVAP system. Regardless, siphoning the tank should purge the vapor.
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If you disconnect the fuel lines before removing the pump assembly from the tank, the fuel will run up the narrow pipes connected to the pump assembly. I don't think you can remove the pump assembly before removing the fuel lines, but I could be mistaken.
Also, I'm pretty sure I saw this happen before, but I could be mistaken as to the physical cause if it.