pre-pump filter install - Diesel Forum - TheDieselStop.com
'99 & up Upgrades and Aftermarket - 7.3L Engine Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 5 (permalink) Old 01-25-2013, 10:48 PM Thread Starter
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pre-pump filter install

So, being the new guy here, thought I would share an experience. I am accumulating all the parts I need to do the hutch and harpoon mods, and thought I would tackle the pre-pump air sucking fuel line and the pre pump filter at the same time. Bought the filter mount and filter through SD.

So, I get it all mounted up and realize that there is not enough space to put the filter in the spot just behind the pump without kinking the fuel lines. Just to prove it, I installed it, drove it up the street (much quieter BTW), and romped on the pedal on the way back, instantly starving the truck for fuel. Shut her down, re-primed the pump, eased her home, and replaced the filter with a a new section of fuel line. She is much quieter, such air must have been being sucked in there, but the filter will have to wait for another day.

Just thought i would share this. I kinda assumed it would work, but now I see that the filter will have to go in that big empty space in front of the tank.

Another, worse option, is the fuel pump is weak and couldn't pull through the filter, but I'm going with the kinked fuel lines for now.

2003 F250 crew, 4x4, 7.3 d with Donaldson CAI, SCT tuner with DP 80ECONO and 60TOW tunes, HPX, Hutch mod, in-line fuel filter, 35" tires with a 2" lift, extended air dam mod, WW2 turbo wheel.
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post #2 of 5 (permalink) Old 01-25-2013, 11:10 PM
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You can avoid kinks if you run the fuel line between the filter and the pump inlet in a loop. Even if you have only a couple of inches between the facing connections, just loop the fuel line past the pump and back around to the pump.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.

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post #3 of 5 (permalink) Old 01-25-2013, 11:29 PM Thread Starter
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I would have done that, but I cut my self short when I bought the line. I will have to go back to the store anyway. There was only about 1/4" clearance between the filter and the 4x4 drive shaft, but that should be fine, right? I would really rather not cut the steel fuel line by the tank if I can avoid it

2003 F250 crew, 4x4, 7.3 d with Donaldson CAI, SCT tuner with DP 80ECONO and 60TOW tunes, HPX, Hutch mod, in-line fuel filter, 35" tires with a 2" lift, extended air dam mod, WW2 turbo wheel.
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post #4 of 5 (permalink) Old 01-26-2013, 09:23 AM
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I made a 180 turn out of brass couplings, that way the hose doesn't have to bend.


2002 F-250 CCLB 4x4 XLT, 7.3, ZF-6 with Midwest Short-throw shifter, ESOF, 3.73 R&P, HPx line, FRx, Racor prefilter before pump, Amsoil bypass filter, Coolant filter too
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post #5 of 5 (permalink) Old 01-26-2013, 10:13 AM Thread Starter
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If I could find 5/16" stainless I'd be happy. I could bend a curve in it. I have almost unlimited 3/8" at work

2003 F250 crew, 4x4, 7.3 d with Donaldson CAI, SCT tuner with DP 80ECONO and 60TOW tunes, HPX, Hutch mod, in-line fuel filter, 35" tires with a 2" lift, extended air dam mod, WW2 turbo wheel.
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