Join Date: Apr 2001
Location: Richardson, Texas
Feedback Score: 0 reviews
Weird fuel issue after changing filters...
Ya know, I've come to the realization that the more you know about our trucks, the more complicated and obscure our problems become. Anyway, here's the latest...
I replaced the filters in my truck... the 2 piece (cap/filter) on the fuel bowl, and a new Dahl 100 element (30 micron) underneath. I've run this pre-pump filter for years without issue. So when I fire her back up, it starts sputtering, duh, as it starts to purge all the air out. No concern, as it does take a while. Well it has taken forever to purge that air out, and it still runs rough, even though the fuel gauge says 50ish psi fuel pressure. When I get on it, the pressure slowly starts dropping to 35, then will eventually climb back up. Also, when I first turn the key on, the pressure gauge takes it's sweet time building pressure... which it never did before... it was always within seconds. What the heck?!!!
My theory is that an injector is stuck open, and is bleeding the residual fuel pressure when I turn it off. And is also the reason the fuel pressure slowly declines when I get on the throttle.
Anyone care to share their thoughts and ideas?
2001 F250 Lariat, crewcab, 2wd, 3.73ls, auto, 4" exhaust, BTS transmission and torque converter, V10 tranny cooler, Isspro fuel pressure and tranny temp gauges, billet t-stat housing w/ 203 deg t-stat, Dahl 100 pre-pump filter, Ford severe duty AIS, Hutch mod, intake heater delete