Fuel Pressure Regulator (FPR) Screen Writeup - Ford Powerstroke Diesel Forum
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post #1 of 142 Old 12-04-2011, 11:32 PM Thread Starter
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Fuel Pressure Regulator (FPR) Screen Writeup

So I suspect that you may be hunting for some lost miles per gallon, or perhaps have noticed sluggish performance from your 7.3 Powerstroke. I am going to walk you through locating and cleaning the FPR Screen.

The FPR is designed to maintain the fuel pressure in the cylinder heads at 40 psi. In addition ensuring that the return restrictor doesn't get clogged with grit. It is my understanding that the oring failing and clogging the screen is a myth and rather is gunk from the tank. O-rings are responsible for clogging your spool valve in your FPR, however.


Step 1:


Step 2:

Between step 2 and 3 it is essential that you have a telescoping magnet handy to catch the screen if it falls into the valley (area below the bowl). Mine fell in during install and removal and I retrieved it both times.

Step 3:

Once you have access to the screen you will find this (most likely)

which is the fpr screen covered in a layer of debris.

I have found write ups that suggest using a qtip to clean it, but based upon how tightly packed the gunk was it would be ineffective. When you have the screen out soak it in some break cleaner for roughly 5 minutes. I then scrapped off what I could and then shot it clean with brake cleaner.

Reinstall is simply reverse of removal. I found it helpful on the reinstall to have a screwdriver in my right hand to pry the fpr away from the bowl, use a pair of needle nose to stick the screen in the housing, and then have a screw driver in my left to push it in a bit more.

For the o ring I found it helpful to again pry the fpr away from the fuel bowl and then stick it over the end of a screw driver. I used my finger to block the oring until I got it on the housing it rests on, and then slid it forward. Pushed the housing back into its location and ensured that the oring doesn't get pinched.

As always I declare no responsibility or liability in you breaking something while following my guide.

Information and pictures have been compiled from internet searches and my own personal knowledge.

Replace part numbers contributed via another member here
I verified and they are good! Ford part number 2C3Z-9157-AA seal kit. IH 1825748C92


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Last edited by glovemeister; 12-20-2011 at 11:15 PM.
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post #2 of 142 Old 12-05-2011, 05:01 AM
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hmmm maybe thats why my trucks fuel mileage is a little low.... ill have to give that a try4


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post #3 of 142 Old 12-05-2011, 08:51 AM
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a mod should put this in a sticky. awesome info. thank you

1994.5 F-350 2 wheel drive 7.3 powerstroke, ZF5, crew cab, dually, rear air lift with dash gauge and controls, 5th wheel and gooseneck brackets in bed, alcoa's, and a ton of miles (over *474k* and going strong) *now with diy tymar intake, mbrp 3" downpipe to 3" duals, stancor relay, prosport boost and pyro gauges, single mass flywheel*
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post #4 of 142 Old 12-05-2011, 10:36 AM
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Just cleaned mine over the weekend. Immediately noticed a pick up in power on the "seat of the pants" meter. I'm hoping I will see an increase in fuel mileage from my, as of now, dismal 11mpg.

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post #5 of 142 Old 12-05-2011, 12:24 PM Thread Starter
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Quote:
Originally Posted by Jameson Bearden View Post
Just cleaned mine over the weekend. Immediately noticed a pick up in power on the "seat of the pants" meter. I'm hoping I will see an increase in fuel mileage from my, as of now, dismal 11mpg.
I haven't noted an MPG increase I'm getting 12 and I reckon this tank will be the same or less. But that is partially because prior to this mod I noted it cutting out and after this mod (not a mod I guess but don't know what to call it, service procedure I guess). While I noted this cutting out I was running some damn high boost trying to haul *** and get home. After this mod I was running a few 25+ psi runs to see if its fixed or if I had another issue going on. This mod was done the day after this started occuring and it cured it. I've also been idling a lot so I suspect that also hurts my mileage quite a bit. After this mod I too noticed a more pep in the step of the truck, in that I am guessing less fuel is required to maintain the same psi in the injectors.

None the less this service is a must do.


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post #6 of 142 Old 12-05-2011, 12:30 PM
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Well maybe my problem is somewhere else then. The near 4.00 per gallon pricetag is good motivation to find the problem though.

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3" DP to 4" Exhaust
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post #7 of 142 Old 12-05-2011, 12:51 PM Thread Starter
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Quote:
Originally Posted by Jameson Bearden View Post
Well maybe my problem is somewhere else then. The near 4.00 per gallon pricetag is good motivation to find the problem though.
Winter fuel.


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post #8 of 142 Old 12-05-2011, 01:00 PM
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Yeah, I don't know if the winter blend is stronger there or if it just affects PSDs more, but I haven't ever noticed a drop of more than 1 mpg with winter fuel in any of my Dodges. Shouldn't these trucks be getting 14-15 mpg or better? That is just based on what I've read on here. I wouldn't think winter fuel would drop mpg's 3-4 points

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3" DP to 4" Exhaust
Tymar Intake
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post #9 of 142 Old 12-05-2011, 01:03 PM
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I lost that screen years ago!

Thanks and Gig 'Em!
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Bought 8/27/09 with 183k miles
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post #10 of 142 Old 12-05-2011, 01:05 PM Thread Starter
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Quote:
Originally Posted by TexasAggie09 View Post
I lost that screen years ago!
Be a prudent idea to replace it I'd reckon. That or your tanks are damn pristine.


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