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NEED HELP/ADVICE AFTER HPOP INSTALL
Hi everyone, I am new to this forum and need some help or advice. I have an early 03 F-250 CCSB with the 6.0 with 162,462 Miles on it. I just did the fuel pump, and all fuel injectors about 3 months ago. I did the egr delete, coolant filter, upgraded oil cooler, and upgraded to the 07 oil feed and return tubes, about 10 months ago. This doesnt matter but I just wanted to put it out there everything I did. About a year ago I replaced the Hubs and Locks along with brakes, shocks tie rods inner and outer, steering stabilizer, and drag link. Also did a 4" MBRP Exhaust ans SCT X3 Programmer about 2 years ago.
Recently I been having a problem with the truck starting when its warm, when the truck sits overnight it starts right up, and when its warm it keeps cranking and no start. Everything I had read people were saying its most likely a leak in the High pressure oil system, So this past weekend I changed the High Pressure Oil Pump, ICP Sensor, IPR Sensor, All Filters, Oil, and did all new O-rings and Gaskets.
Now my problem is after doing all this work my factory oil pressure gauge at idle drops to 0 and says check gauge, if I bring the rpms up to about 1200 i have normal pressure. I have tried reving it, went from 25MPH - 50MPH excessivly 12 times then let the truck sit for 10 mins like the dealer instructions say and still the same problem.
Im confused now because the truck also seems to be running smooth and has the power it should. Im just concerned about the guage dropping at idle.
My question is whats left for me to replace, and why is my gauge jumping up and down? What can I look into next?
I also change my oil every 3,000 - 3,500 Miles with 15w-40 Shell Rotella oil and Keep up with all the filter changes. I like to take extra care of my stuff to be safe.
All my parts are from a Ford Dealership and i Always used Motorcraft Filters.
Any advice will help.