So, I am first time poster to this website. I have found several helpful threads recently while working on my truck.
Let's start by telling you what I have. It is an early 2003 F-250 6.0 Powerstroke. It has 180,000 miles now, I purchased it with 170,000. When we bought it, it had the EGR delete, ARP head studs, 4" exhaust CAT/muffler delete, gauges, and a programmer with NO programmer - and it was runnin hot to say the least.
The dealer, not a Ford dealer, replaced HPOP, FICM, STC fittings, blue spring fuel pressure regulator, fuel injector O rings, oil cooler, and oil filter housing. Then I replaced the radiator with a solid aluminum radiator, CAT ELC coolant and ICP sensor. I went to HyperTech and had it returned to the stock program and had a HyperPac installed (power level #2).
Since we had the programmer installed, I have been seeing it throw a code for cylinder #4 contribution balance. Also, it has been idling a little rough but not too bad. So, I tried changing the oil to MotorCraft 15W40 and 8oz of RevX. No dice. We treat with Stanadyne with every fillup and it never gets below a 1/2 tank of fuel. I replaced fuel injector #4 last night. Still getting the same code on the programmer.
Any ideas, suggestions? Could it be the glow plug? Any advice is welcome and greatly appreciated. Thanks in advance!!!