I installed the big line kit and a fuel pressure guage. Everything was working fine, but now my fuel pressure guage bobbles back and forth when the truck is running and will stay in the area that the pressure should be. When I shut the truck off it doesnt bobble and slowly drops (wired it on a switch). Could this mean something is wrong with the pump, guage, or what? Any ideas?
I installed the big line kit and a fuel pressure guage. Everything was working fine, but now my fuel pressure guage bobbles back and forth when the truck is running and will stay in the area that the pressure should be. When I shut the truck off it doesnt bobble and slowly drops (wired it on a switch). Could this mean something is wrong with the pump, guage, or what? Any ideas?