Quote from 1972Mach1 on May 16, 2019, 5:45 pm

Thanks for the replies, guys.  Just a little follow up and another question.  I got a hold of Hyperfuel....actually they called me after an e-mail.  Very friendly and fast to get back.  The tech (Kenny, I believe) also felt I was having a vapor lock issue of sorts with the return line.  So I pulled it off the FCC2 and tank and blew through it, but honestly I didn't get anything out of it.  What I believe and hopefully had happen was I overfilled the fuel tank before I left on my road trip, and had fuel come out the truck's fill neck.  My fill neck is higher than my vent line on top of my tank, so I'm thinking some fuel may have entered it and plugged the return line, and had evaporated by the time I blew it out yesterday.  It also makes sense that it cut out going up hill the first time, as my return line is mounted toward the rear of the tank (out of convenience during the install), so that would've forced more fuel into the vent line (again, hopefully)....... Now the question part:  So I've got the truck pulled apart right now but did a key on test with the FCC2.  I discovered that the fuel pressure gauge is indeed going to near 60 psi as it supposed to, but bleeds down to 40 psi and holds steady with the key off after a minute, which is why I thought it was only getting to 40 psi in the first place.  Is this bleeding down to 40 psi with the key off normal?  Before I go taking the top off the FCC2, I was wondering if it's supposed to bleed down like that?  If it's not, I will definitely be taking the top off to inspect, but seems like if it had an internal fuel line leak, it'd bleed down to 0 psi, not just 40.  Thanks for your time again.

 

Lucas