Rocketman3 Posted August 13, 2022 Share Posted August 13, 2022 Hello I need help figuring out the next step. I installed my FASS pump about 2 weeks ago (along with 2 fuel pressure gauges -1 manual at the last filter & one electronic), everything has been working perfectly until now. I have driven the rig about 18 hours since the install. It worked great today, we parked in a campsite (slightly nose down), and a bit later I decided to completely air down. (We are only planning on staying here tonight). The last time I recall seeing the pressure gauge was about 15 min before parking- it was fine then 18 psi at a startup. When I turned the key on to air down - I noticed the fuel pressure gauge was saying only 2 or 3 psi - instead of the 18 like it normally does! Is it time to panic yet? The FASS pump is vibrating like it’s running but the vibrations are weaker than I remember when I installed it. Things I have done so far… Verified I have 12v going to FASS pump when the key is on. Both pressure gauges say the same - an electronic (at dash) and mechanical at last fuel filter My tank return goes back into the tank - right in front of the diesel fill. There is no fuel stream dropping into the tank- maybe a drop or two. Because the pressure was fine just before the problem- I don’t believe I have water in the fuel (I filled up 40 gallons ago - fuel gauge is just above half). My guess is the pump died. I have not tried to start the rig. I do have an extra set of FASS fuel filters - should I replace them? Help! We are near Missoula Mt and supposed to be in Banff on Monday. Link to comment Share on other sites More sharing options...
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