Cleaning the Fuel Pressure Regulator - Ford Powerstroke Diesel Forum
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Old 02-11-2008, 07:43 AM
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Cleaning the Fuel Pressure Regulator

I'm attempting to clean my fuel pressure regulator (Not the IPR). I have the procedure on Alldata, but I'm slightly confused and was hoping someone here could explain it a little better. Alldata says:

Quote:
1. Remove the air cleaner assembly and the air inlet tube.

2. Remove the fuel pressure regulator cap, spring, and spool valve from the fuel control valve.

3. Thoroughly clean the fuel pressure regulator bore in the fuel control manifold.
Now what I don't understand is:

1. What is a spool valve? I removed the cap and spring, but no spool valve. I'm assuming it's in the same place as the cap and spring?

2. The picture that Alldata supplies just shows an arrow pointing vaguely at this whole assembly, and it's labeled "fuel control manifold."

So which part is the manifold, where is the bore and spool valve, and what's the significance of removing the cap spring and spool valve unless that's the "bore" I'm supposed to thoroughly clean (which I don't think it is because it says the cap is to be removed from the fuel control valve, not the control manifold.)?!

Anybody ever done this?



1996 PSD. 217,XXX miles. 5 speed.

I'm doing this in an attempt to cure a loping idle.
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Old 02-11-2008, 08:45 AM
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Are those directions for an OBS truck?? I'm confused.
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Old 02-11-2008, 08:50 AM
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Yes they are for an obs truck. They're actually the directions for a 97 because Alldata apparently has a glitch. If you look up this procedure for a 96 it has you trying to clean the IPR, not the FPR. Maybe these instructions aren't correct either.
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Old 02-11-2008, 09:01 AM
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Well the FPR or fuel header is on the drivers side of the fuel filter housing no where near your air cleaner assembly. So these directions make no sense to me.
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Old 02-11-2008, 09:14 AM
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Yes we're talking about the same thing. I don't know why it says to remove the air cleaner assembly. I didn't remove it. But we're talking about the FPR, right next to the fuel filter. When it says "Remove the fuel pressure regulator cap, spring, and spool valve from the fuel control valve" they're talking about the same cap and spring you remove to do the FPR shim with the BB.
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Old 02-11-2008, 09:21 AM
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Well you can clean that out but i would also remove the FPR from the housing and clean the screen also.
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Old 02-11-2008, 10:54 AM
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Well I just cleaned the screen. What a PITA. FYI, always lay paper towels under the FPR, and don't drop the screen. No noticable difference in idling though. It's still loping at idle after warmup.
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Old 02-11-2008, 04:25 PM
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Be sure you didn`t drop the o-ring that goes over the screen. Thats what I did.
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Old 02-11-2008, 05:07 PM
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If you're talking about the one that is on the regulator and butts up to where the screen is, yes I did drop it. Luckily I have alot laying around and just replaced it.
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Old 02-11-2008, 05:13 PM
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Thats the one and I didn`t have any so here I am getting a friend to drive me 24 mi. to get the little Bas%$#*. Ha.
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