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Power Strokes
6.0 Tech
Hard long start cold no start hot runs rough
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[QUOTE="ascrap2003, post: 1383000, member: 25849"] Ok got my self a handfull Working on a truck Truck history based on what I can tell Poor oil change history/poor maintenance Had a long start cold with loud injectors and a miss after 3-5 minutes injectors got quite still a miss & low power But would run start & drive. ICP, IPR, FICM readings etc were all good at the time. I performed the following. Replace injector o rings including top oring & cleaned spool valves 600 grit re assembled. 2 of the injectors had a problem pulling the spool valve out so I sanded this a lot more till they would some what go in easy & slide side to side easily. Rail nipples felt firm & snug when moving so rail orings good I think. Replaced 1 damamged stand pipe New valve cover gaskets, new gp harnesses. First start long obviously when started ran crappy then smoothed out & a lot quiter. Ran good & smooth till warm up but never gave any pedal effort or anything. After warm up ran rough miss low power then died and no start after that, checked ipr high & icp low suspected hpo leak Replaced other stand pipe & 2 dummy plugs also replaced fuel filter, fresh oil & filter all motor craft placed a quart of mystery oil & tranny fluid to clean system & injectors Starts cold run ok maybe a lil rough but once warm runs rough and miss. After hot hard start/No start most times Start IPR 50%-80% when hot Icp anywhere from 500-1400 Checked base oil pressure gauge good but filter housing takes over 10 seconds to fill when cold but it does fill, drain back valve is intact. Fuel bowl also fills but havent checked actual pressure on fuel or lpo Hot idle ICP 1400-1500 IPR 45% FICM Good STARTER 160 RPM + BATT GOOD Codes: INJECTORS P0266 P0281 P0284 COOLING/FAN P0480 P0528 CMP/CKP P0614 P0617 GP SYSTEM P0670 P0674 P0683 Cluster Code Oil Press Switch C1284 Oil Press on dash keeps going back and forth. My toughts: I perfomed bubble test and seen small bubbles in fuel bowl Injector/s? Check Compression on each cylinder and remove plugs while re performing bubble test replace any injector that is suspected thru bubble test including injectors 2,7 & 8 Not really suspecting compression but you never know engine cranks over evenly Needs All New Injectors Maybe? Injectors bad to begin with maybe worse & leaking oil psi since I replaced o rings & messed with spool valves Check Fuel Press & Replace Pump If Low Maybe new STC fitting and or IPR clogged How do I check base oil pressure to get actual psi? Any techs out there what are your toughts? [/QUOTE]
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