Fuel pressure doesn't seem right.
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Laughing Gas
Joined: Apr 2007
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From: Burton, Texas
Fuel pressure doesn't seem right.
When we did the turbo swap at Cody's a few weeks ago, he also shimmed the FPR for me. Before the shim we got a reading of 40 lbs. and after the shim only 45 lbs. It was then that we discovered my fuel bowl was full of gunk, not to mention the screen was clogged up pretty good. I have since removed my fuel bowl and cleaned it really well. I'm still only getting a fuel pressure reading of 40 lbs. What could the problem be?
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Laughing Gas
Joined: Apr 2007
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From: Burton, Texas
No, I didn't pull the bowl off the FPR. By golly I saw that thing and messed with it a little to pull it off, but I was afraid of breaking it. I know I should have run in here and asked someone about it. Am I gonna have to pull the fuel bowl again to get it off? And does it screw off or what. I just bet that's where the problem is. That's the one thing I didn't clean.
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
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From: Southwest Georgia
You do not have to pull the fuel bowl, just unbolt the FPR and remove the lines going to it and remove it by itself. The three 95's that I have worked on had metal bowels and they were held in by a snap ring, I have seen the plastic bowls but have never worked on one. The screen mesh in the three that I worked on was rolled inside the bowl and I unrolled it for cleaning then re-rolled it to re-install. Make sure you remove and clean the small screen in the plasitc piece (that has an oring on it) that goes into the fuel bowl from the FPR (the plastic piece comes out of the FPR with the screen, be careful not to break it).
Last edited by plowhand; Nov 12, 2008 at 11:55 AM. Reason: addition
FOREIGN GURU
Joined: Jul 2006
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From: Celaya, Gto. MX
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Laughing Gas
Joined: Apr 2007
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From: Burton, Texas
Ok, thanks you guys. I'll try it... mine has one of those blue hoses on it with those damn clamps that you have to cut off. If I can get that off without tearing anything up, then I won't have to remove the fuel bowl again.
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Playing in the Dirt
Joined: Oct 2005
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From: Southwest Georgia
To cut off a crimped clamp use a pair of dikes (side cutters) and cut one side of the clamp where it flares. You can usually do this without damaging the hose.
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FOREIGN GURU
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From: Celaya, Gto. MX
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Laughing Gas
Joined: Apr 2007
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From: Burton, Texas
Got the plastic bowl off no problem, cleaned up the filter screen, blew brake cleaner through all the ports I could. The Link that Jose gave me said, "Black debris in screen indicates injector o-ring deterioration." There was black debris, (more like a black film, looked like soot when it dried, wiped off easily,) but I was hoping it was due to all the gunk that had been in the fuel bowl. Let everything dry, reassembled it and reinstalled it. I still have only 40 lbs. of fuel pressure. The screen was not really that dirty, so I had a feeling the pressure would not be any better afterwards.
So if indeed I have injector o-ring deterioration, could this be the cause of my mediocre fuel pressure? I should point out here that the truck runs great, and I have had no issues with it other than the oil leak that I helped Cody fix earlier. (You know, I handed him tools and stuff.)
So if indeed I have injector o-ring deterioration, could this be the cause of my mediocre fuel pressure? I should point out here that the truck runs great, and I have had no issues with it other than the oil leak that I helped Cody fix earlier. (You know, I handed him tools and stuff.)
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
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From: Southwest Georgia
Did you clean the screen in the plastic piece that goes into the fuel filter housing from the FPR? If it was excesive o-ring wear you would know it, trust me. With all of the crud that was in you bowl my guess is that was most of the black stuff.
You may have a weak spring in the FPR. One thing to try is to remove the spring and stretch it some and reinstall it and see if your pressure goes up. If so, weak spring.
You may have a weak spring in the FPR. One thing to try is to remove the spring and stretch it some and reinstall it and see if your pressure goes up. If so, weak spring.