ascrap2003
New member
- Joined
- Jun 17, 2016
- Messages
- 35
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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?
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?