Join Date: Nov 2011
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High Pressure Oil Problems
I will tell this as brief as I can:
I have had, and I still am, the worst problem with my truck ever. It started with the HPOP rear plug beginning to leak oil. Following the "On-engine" instructions from International, I replaced the o-ring and installed the bolt using the loctite provided with the kit. (Yes the threads were oil-free in the pump) As I torqued the bolt to spec, I felt the dreaded strip feeling before the click of the torque wrench. On my test run, the bolt blew out of the hole. I thought about a heli-coil but considering my mileage, I bought a replacement pump as maintenance. I replaced the o-rings in the IPR as well. The truck started right up after the new pump replacement, but after about 3 minutes it suddenly died and would not start again. After blocking off the oil to the passenger side bank, I got the truck started on 4-cylinders telling me I had a high pressure oil leak in the passenger side 4. I narrowed the problem down to injector 3. Instead of monkeying with it, I bought a replacement injector. I followed all instruction on how to do this, including draining the oil in the rail with the 2 plugs under the valve cover etc. I filled the rail and the reservoir in the HPOP with oil and after a bout 4 seconds, the truck fired right up. The idle was very loud and "rattly" like a Cummins sounds (this is not a knock on Cummins but those of you who know what I mean will understand). The truck ran VERY rough, especially at 1750 RPM in motion, like a badly slipping transmission. I know the truck has to purge air, but I know this is a little extreme. Also, for the first time ever my "Service Engine Soon" light illuminated. I unplugged the ICP and the truck ran much quieter and better.
My questions are 1- Was the injector problem related to the HPOP issue or just a coincidence? 2- Why would the truck run differently now after the injector replacement?
I am getting the truck scanned for codes tomorrow, but this issue is just not making sense to me. Has anyone else had a similar problem or have any ideas to share? Is it best to replace all injectors and sensors to make the HPO system "new"?
Thanks to all who reply!
2001 F-250 4X4 CC SB 7.3, 4R100 3.73, BFGoodrich All-Terrain TA, Motorcraft filters, Mile Marker manual hub locks w/ESOF (No hub "floating"), AIH delete, Rust-Oleum bed coating, Silverstar headlamps and 5000K LED lamp replacement interior, clear headlight assembly, Moog greaseable u-joints, Moog greaseable ball-joints, Moog front hub assemblies, retractable hitch in bed, original black CPS (BEST "mod" to have), Energy Suspension bushings, Red ELC, Edge Evolution, Walker BTM, Donaldson AIS