i was looking at fass's web site and cant find a number to call? who can i call on some help on some fass questions? i had a fass on my truck and bought a bigger motor 4 the pump im installing the motor rights now and it came with a spring? do i need to put this new spring in? and where dos it go?

 

Contact Diesel Dan if no one else answers. Anyone who sells fass is resonsible for the install I think so they should know.

Im pretty sure the spring is to raise the preassure.