FPR mod gone bad, need help asap! - Ford Powerstroke Diesel Forum
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Old 01-12-2008, 09:12 AM
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FPR mod gone bad, need help asap!

did the fpr mod. The same one from that link that has the pictures along with the directions. where you stick the screw in the spring than put the cover back on. Anyway, did that and made the screw the right size 3/16 and everything. Start the truck up and it has the worst idle I have ever heard, crazy rattling, shaking, knocking, missing? I don't know what missing sounds like but I think maybe that is what is going on. Well I start driving down my road and I can tell something isn't right, it has no power, I can floor the pedal and it barely gives it gas, seems like it isn't getting the fuel it needs. So I put everything back to normal, and it is still doing it, it is even worse, I had to leave my truck at the bottom of the hill because it won't make it up. This really sucks, the truck was running perfectly before I did any of this. Sorry for the long thread but I need help!
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Old 01-12-2008, 09:20 AM
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Have you removed the shim?
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Old 01-12-2008, 12:54 PM
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yes, I took the shim out, and it is just as bad if not worse.
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Old 01-12-2008, 01:42 PM
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i had mine shimed and after about a week it began starting hard lopeing at idle and blowing white smoke at idle and runnin kinda crappy on the bottom all this while it was cold after it warmed up completely it would smooth out but run no better than before it was shimmed i just removed the bb and all was good again
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Old 01-12-2008, 01:47 PM
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mine sounds like that but worse. It is getting worse too, I can floor it at it just stays bogged, this is while it is parked, it won't even drive at this point.
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Old 01-12-2008, 01:51 PM
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sounds to me like a pluged fuel filter or screen in the tank have you change your filter lately maybe you had a bunch of crud in there and the higher pressure did it in
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Old 01-12-2008, 02:05 PM
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I, was thinking the same thing, I really hope that is what the problem is. I was trying to unscrew the cap but my hands were all greasy from fuel and it started raining. It is pouring down rain right now and it is a five minute walk to the truck, so I'm gonna wait till it lets up. I really hope that is what it is, I wish I hadn't even touched anything, it was running so nice before. But always gotta improve performance, I'm getting the bug and it just bit me in the a$$
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Old 01-12-2008, 02:06 PM
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what is the worst case scenario?
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Old 01-12-2008, 02:16 PM
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well if you havent changed the filter in a while it needs done anyway id got get a filter first then go to the truck open the drain pull the filter spay the houseing out real good with throtle body cleaner then close the drain put the new filter in turn the key on let it fill up with fuel key off put the lid on and start it up and hope it runs like new again
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Old 01-12-2008, 03:37 PM
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anybody else have any input?
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