Oil rail upper seal replacement

[horseplayperformance]

Hey guys, here's the deal;
Got a buddys 2004 F250 6.0L in the shop with no power and extended hot crank time. Coded P2290 (icp low) and KOER had Cyl. #2 contribution. Icp sensor was full of oil and KOEO icp volts were below threshold, so replaced sensor and harness repair kit. With icp volts in range, started again and KOER came back with same codes, also noticed that ipr% was above 25 @ idle which led me to an HPO leak. Since #2 was weak, pulled that cover and ran again with oil squirting from on top of #2 injector. Replaced injector & ran again & *** still has oil squirting. Could it be the upper oil rail seal & if so, where do you get a tool to remove them. As always, all input is greatly appreciated. Mark

[rushing97]

I have an 04 f550 with 57000 miles. I have a p2290 i pressurized the HPOP and found oil rail leaking above injectors talked to ford and they said that it is a controlled leak and said probaly my injectors were bad. I pulled all 8 injectors and sent them out and tested all were good. Reassembled motor, started ran 5 mins now back to no start. has new IPR, new ICP and Harness, has 560 PSI while cranking, no start again. When running could not build over 750 PSI. - I am still searching for my answers. - Eric

[horseplayperformance]

Thanks for the reply Eric and good luck with your quest. I too am confused as I always thought the IPR was the "controlled leak" to maintain ICP. Therefore, the system had to be tight for the IPR to function properly. I was told by a Ford tech, that oil spraying from the top of an injector was a problem, and since the seal ring in the injector was only servicable by injector replacement, that was my only option. But he couldn't (or wouldn't) tell me anything obout the upper oil rail seal replacement. Anyway, I have a new set of seals, and if I can get the old ones out I'm going to replace them. They were not expensive through the local parts store. Thanks again for the reply. Mark

[Banshee1]

I changed out my oil plugs on my 06 No Start 2006 6.0

[horseplayperformance]

Thanks Banshee. I forgot to mention that this 04 has the 03 engine so the oil rails are different. This one has the icp sensor on the back of the engine and not in the right oil rail. Thank goodness they moved it. Still no luck finding a tool to remove the downspouts so I can get to the seals though. Thanks again, Mark

[4ceFed]

I have replaced a couple of the 03-early 04 oil rails for leaking around the injector spouts, never for a no start though. I have looked all over the internet for a tool to unscrew that pivot spout that goes into the injector with no luck. I actually cut a rail in half to inspect and found that the pivot spout are sealed to the rail with a hard o-ring similar to the ones used on the 05-07 rail plugs. I am going to call international to see if they will sell me one. One thing to remember is there is a oil 'exhaust' on the top of the injector and oil will come out of there, if there is one that is leaking more that is probably the culprit. The best way to test the rail is to get the engine to operating temp and apply shop air to oil rail with the air test adapter, listen with a stethoscope around each injector, you should not hear any leaking.

However with your symptoms I would be willing to bet you have a weak high pressure pump, stuck IPR valve, or and injector with a broken spring clip............

[4ceFed]

horseplay, i just saw you said you got a new set of seals? What seals are you referring to?

[4ceFed]

Originally Posted by rushing97

I have an 04 f550 with 57000 miles. I have a p2290 i pressurized the HPOP and found oil rail leaking above injectors talked to ford and they said that it is a controlled leak and said probaly my injectors were bad. I pulled all 8 injectors and sent them out and tested all were good. Reassembled motor, started ran 5 mins now back to no start. has new IPR, new ICP and Harness, has 560 PSI while cranking, no start again. When running could not build over 750 PSI. - I am still searching for my answers. - Eric

HPOP, if the rails are leaking under air pressure and the injectors are good the rails should be replace as well. Leaking rails will cause erratic idle and surging, have not seen a rail cause a no start......

[hooknline]

why not just replace the oil rail if the R&R of the seals is questionable????

[4ceFed]

The rails are $400 a piece, seals probably like $20.

[rushing97]

I could not find the seals, talked to international they wanted $660.00 for a seal kit they could not sell me. I found taking a chainsaw spark plug wrench and drilling it the large end out with a 13/16th bit fits perfectly into the oil rail but could not get free. Assuming red locktight was used. I did not want to heat without new seals. Once again brought the oil rails to ford, they said it was a controlled leak. All 8 of my cones leaked exactly the same. No spray, constant dribble. Did find out from international that all 6.0 cones sealed the same way from international. Same parts same everything (did ford lie to me?) Still have no start, but not posted, right before truck died last time I did loose oil pressure gauge. Unplugged alternator, got oil pressure back on gauge.

[horseplayperformance]

Thanks everyone. 4ceFed, the seals are the "high pressure oil rail upper seals" according to the listing @ the local Carquest part#GS33445. The numbers I got from Ford say they are serviced with kit # 9T287 which also has the end plug seals, according to my Ford parts guy. Ford tech also told me they just replaced the complete rail if it was questionable. I'm trying to help out a friend who is unemployed and recently divorced, so funds are very limited. Very creative rushing. I took a steel hydraulic hose end with a 7/8 wrench size, ground the threads out with a burr and welded an old socket to it. Have hit them repeatedly with a 1/2 impact and they won't budge. Trying to help out a buddy is becoming trying on me. Thanks again. Mark