Originally Posted by
ala_xfire
That is the fuel delivery line, it is normally under pressure ( about 55 PSI ) but the quantity will be small if you loosen it without removing the pressure.
You can do it either way, as is ( with pressure ), or remove the fuel pump fuse from the RCM while running.
As you can see, the fuel pump fuse is the first blue one past the yellow one.
Thanks, I’ll get some shop rags to place around the hole and loosen it to relieve the pressure. Hopefully it won’t make to much of a mess.