I have been using my left/drivers side tank since I bought this rig a few years ago because when I switched the tank selector switch the gauge did not change.
Recently I have noticed that if I let the truck idle or after a drive or even first thing in the morning there will be up to a quart of gas that comes out the right/pass fuel fill opening/cap.
This 81 K3500 has a 454 with a two line fuel pump with no return line and no sign of a hard return line on the frame rail.
A real head scratcher.
My NAPA is having a friends and family sale next week so I am thinking of getting a new switch and selector valve.
I also have an 87 parts truck with dual tanks but I have not been under either truck with fuel selector on the brain to see if they are the same.
I found this thread to be of great help.
http://67-72chevytrucks.com/vboard/s...d.php?t=567277
I do not know if my selector valve has return ports or if they are capped or open and I cant think of why my right/pass side tank would be filling up.
I would like to get this fixed and don't mind buying the new parts but if my new valve has return ports do I just cap them?
Ideas?
My build thread.
http://67-72chevytrucks.com/vboard/s...d.php?t=643974