Compression Ignition Addict
Join Date: Oct 2011
Location: Tehachapi, CA
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If it's not the orings, the WIF sensor will also leak. Just remove it and put in a pipe plug.
Usually it is the Fuel Restriction Sensor that is the leaker (on the fuel pressure regulator on 96-97's and on the back of the fuel bowl near the bottom on 94-95's) that you can use a 1/8 NPT plug. The fuel heater feedthrough is sealed with an o-ring and that is held down by the WIF sensor (also o-ringed IIRC). Note that fuel bowls have also simply rotted out on the bottom on some trucks. Cheers!
1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed
SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.