P0275 code

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Jun 15, 2016 | 08:41 AM

Rengland2008

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From: Manawa, WI

P0275 code

Hey guys, I have a 2004 F250 with a powerstroke 6.0. I have done the egt delete and oil cooler upgrade. Last weekend I did head gaskets, arp studs, new heads, injector o rings, updated stand pipes and dummy plugs, glow plugs, glow plug harnesses, water pump, and exhaust gaskets. After everything was done and truck was primed and started it ran really rough. I drove it a little to possibly purge any air and it still ran rough and I got a code p0275 for cylinder 5 contribution. I removed valve cover and oil rail and swapped injector 3 and 5. 5 was covered in fuel. After reinstalling oil rail I cranked engine over and saw cylinder 5 intake valves were not moving. Removed rail and rockers. Pulled push rod and it was bent. Installed new push rod a and reassembled. Crank engine over to verify all rockers were moving. Reinstalled valve cover and started truck. Truck ran great. Cleared codes and test drove. After test drive truck sounded like it was missing so I checked the codes again and p0275 was back! I know at this point I need to check the harness but any other possibilies you may know of? FICM voltage it good at 48v and oil pressure reads good as well. Any input is much appreciated.

Jun 15, 2016 | 09:19 AM

BLADE35

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From: Saratoga Springs,UT

We'll since you swapped injector 3 & 5 but the DTC did not follow go over ware harness at FICM and inject

Jun 15, 2016 | 11:40 AM

Rengland2008

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From: Manawa, WI

That is what I plan to do tonight. I was just concerned because the rod was bent and I ran it for about 20 min that way before I noticed the rod was bent. I just over think this stuff and expect the worst but hope for the best.

Jun 15, 2016 | 03:39 PM

Rengland2008

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From: Manawa, WI

So I checked the fuel injector harness and everything appears to be good. I cleared the code and it didn't show up until engine got warm. Wtf????

Jun 16, 2016 | 07:03 AM

Rengland2008

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From: Manawa, WI

Well thanks for the help(sarcastic voice).

Jun 16, 2016 | 07:15 PM

78fordman

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From: Jefferson, Iowa

Reinspect your valvetrain. A harness problem would generate a low circuit or high circuit code.

Jun 16, 2016 | 07:37 PM

Rengland2008

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From: Manawa, WI

Well today I decided to swap injectors again. I swapped 1 and 5 and after getting everything back together, cleared code and let it run for a bit I got a cylinder 1 contribution code so I will be replacing the injector soon and hopefully that fixes it. It's just weird because I had cyl 5 code, swapped 3 and 5, same code, swapped 5 and 1 and now code is at one. We will see what new injector does for it.