Fuel filter blowing out - Ford Powerstroke Diesel Forum
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Old 02-27-2013, 08:48 AM
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Fuel filter blowing out

Ok, this is getting old. I replaced the fuel filter on my '99 F250 diesel truck a few months ago. All was well until I did that. I've had this truck for over 10 years and have never had the kind of trouble we are having now. Since I replaced that filter, we have gone through 4 new filters trying to solve a- not just leaking- but blowing out fuel filter. Had to have it towed again yesterday. It was towed back to the garage (Christian Brothers) that it was "fixed" at last time (about 3 weeks ago). They said that the fuel pressure regulator had a loose screw in it that was not allowing the regulator to work properly. I didn't know if they were FOS but it was running properly so I just paid the 175.00 and accepted it. Well, we were out yesterday and started up the truck and it did it again. Here's how it goes: Start up truck at home. Drive it to wherever we are going. Shut down truck. Be at where we are for about 20 minutes. Start truck again- Fuel Sprays All Over Inside Of Engine Compartment. Any ideas? I'm convinced it has something to do with a plugged fuel return line. Is that possible? Does this truck have one? I'm hoping someone can help me here as Christian Brothers does not seem to know what they are doing in regard to this truck. Thanks!!!
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Old 02-27-2013, 01:30 PM
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yes..has a return line, and FOS. If that screw was loose, you'd have a leak at startup. Its the line thats connected to the FPR. I think your experiencing WAYtoo much f/p..(fuel pressure). The FPR..(fuel pressure regulator)is scored,so its hanging up inside itself, causing the high psi. Have them or YOU, remove the FPR and examine the plunger. Also you can "lightly" with compressed air, shoot it thru the return line...
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