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Power Strokes
6.0 Tech
Not your Normal No start 6.0...Need some suggestions
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[QUOTE="powerstrokedkid87, post: 1127363, member: 1658"] Well after a whole lot of testing and digging im about at my end of frustration. I have a 07 6.0 with a no start Truck had sat for a few months, from what I was told an injector was changed because of the no start but that's all the information I really have on it....did the first normal steps, no codes on the dash, AE showed cylinder contribution code for #7, and truck would not build more than 250PSI of oil pressure. First thoughts were bad injector and a HP oil leak. Check Ficm 48.5 volts while cranking, low pressure comes up on the dash motor turned over ok... Unpluged ICP sensor, still nothing, IPR desired went to 1600 ran an air leak test, had air coming out under both valve covers. Decided to pull the valve covers and go from there. Pull pass side valve cover found a bent pushrod on #7, replaced the push rod, and rotated the truck over by hand and found that the push rod was biding against the rocker. At that point, decided that the heads had to come off for studs ect, and well inspect pistons ect. Pulled the heads driver side everything looked good, but oil rail was bone dry. Pass side had a real bad stuck valve in the head, everything under the head looked good. figured that's where the bent pushrod came from. heads went to machine shop, we did the normal items, blue spring, egr delete, oil cooler, STC fitting, stand pipes, dummy plugs new IPR screen. Injectors were out to be tested at MPD everything came back in good shape put the truck back together, went to crank over, after more that what it should have taken to crank, only ever able to build 50PSI oil pressure. that point ran air leak test again, still air from both valve covers, and driver side rail still dry....pulled both rails, had all new orings put in, and tested that they hold pressure, replaced the HPOP, IPR, and replaced dummy plugs and stand pipes again for good measure, also inspected the injector orings, everything was good no issues. reassembled, went to crank...still builds only 50PSI. IPR defaults to 1600 when ICP sensor is unplugged. IPR at .08 KOEO .24 while cranking ficm 48.5 Next we air leak tested, no leaks, after a few seconds of cranking we get low pressure oil on the dash guage, and oil filter housing fills up at the normal pace. At this point the only component we can think of in the high pressure system is the branch tubes. so we pull the motor out enough to replace the branch tubes. since the motor was just about out, decided to pull the front cover and inspect it, and the gears as well. No scores or marks anywhere on the Low pressure side, pulled the branch tubes, nothing looked cracked, but replaced them. Put truck back together again...Now we get no low pressure oil! At this point, Looking for some suggestions what else to look at, my next move it so pull the oil pan (should have done it when we did the branch tubes!) and inspect the pick up tube and seals, what I don't understand is how we are now not making low pressure oil. Anyone have some ideas, maybe something I have over looked? maybe something I should go investigate again, I have become very frustrated with this truck, but I am now determined to get it running. The truck overall is in great shape and very clean! any ideas let me know! [/QUOTE]
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