I have the top of the fuel pump exposed under the left rear seat. I would like to attempt to spin it up before I remove it. I’ve already ruled out the easy stuff like the fuse, pump relay, and inertia switch. There is NO fuel pump pressure at the Shrader valve with the key on or starter engaged. I see four wires going into the pump. BLACK- BLACK WITH WHITE- PINK WITH WHITE- and YELLOW WITH WHITE. I’m sure one is ground. Another pair are probably for the fuel gage. Which pair to I need to energize to test the pump?
Next question. How do I unscrew the big blue plastic retainer from the top of the pump? Is there a special tool that I HAVE to buy?
Thanks for your help.