NitroJoe
Member
Hello army!
I need a few second opinions before I start down the next rabbit hole.
Story behind truck: Bought from a negligent owner who performed no maintenance. Oil leaking everywhere. 350K on dial. No idea on what if any parts were changed.
Here is what I did to correct the truck before we get to the point:
Now what is happening....
No boost/Low boost - like nothing, at WOT I might see 5 lbs occasionally, but I have to really force it (like a race car). Takes over 1/2 mile to even get that much at WOT
She idles well, no surging, no loping.
Bit of a hard start, way better after I replaced LPOP, verified oil in reservoir
Autel scanner while driving
The truck DOES report a P1211, but nothing else.
Here is additional troubleshooting I performed:
Thanks in advance,
NitroJoe
I need a few second opinions before I start down the next rabbit hole.
Story behind truck: Bought from a negligent owner who performed no maintenance. Oil leaking everywhere. 350K on dial. No idea on what if any parts were changed.
Here is what I did to correct the truck before we get to the point:
- Rebuilt turbo (360 bearing, WW, new 1.0 ex housing)
- Turbo pedestal with delete and resistor in plug.
- New bellowed up pipes
- New IPR, new ICP (ford or equivalent)
- New LPOP
- Reservoir was slowly bleeding down overnight
- Cleaned everything, cleaned check ball in block under housing
- New gaskets for oil reservoir housing, HPOP, and fuel filter housing
- CNC line kit as well for HPOP
- 6.0 intercooler, new boots, all cleaned
- PCV reroute to filter and reinstalled back to intake
- Oil Cooler rebuild (ford parts)
- Coolant flush
- Oil change 15w40
- Bypass oil cooler installed as well (Amsoil)
No boost/Low boost - like nothing, at WOT I might see 5 lbs occasionally, but I have to really force it (like a race car). Takes over 1/2 mile to even get that much at WOT
She idles well, no surging, no loping.
Bit of a hard start, way better after I replaced LPOP, verified oil in reservoir
Autel scanner while driving
| RPM | Barometric PSI | Exhaust Back Press PSI | Inj Contr Press 1 PSI | Inj Contr Press 2 PSI | IPR % |
| 680 | 14.95 | 16.15 | 474 | 481 | 23.8 |
| 645 | 14.95 | 16.44 | 507 | 559 | 24.6 |
| 1400 | 14.95 | 16.88 | 755.65 | 730.99 | 33.59 |
| 1600 | 14.95 | 18.69 | 839.77 | 858.62 | 35.93 |
| 1819 | 14.95 | 18.79 | 1109 | 1038 | 48.43 |
| 2582 | 14.95 | 23.32 | 1430 | 1386 | 56.64 |
| 3076 | 14.95 | 29.04 | 1649 | 1694 | 63.28 |
The truck DOES report a P1211, but nothing else.
Here is additional troubleshooting I performed:
- Verified oil level in resoivior
- Verified fuel pressure (riff raff gold spring) is showing 75PSI, on list to change to silver
- Test also performed under load and WOT, no change 75 PSI
- Should also rule out tank issues (although I do have a frame mounted filter no debris)
- Pressure tested charge side of turbo fixed any leaks, intercooler good.
- Map sensor is bad, value should be changing some
- Possible bad oil?
- P1211 Could be a ton of things but
- leaning towards weak HPOP
- possible bad injector O rings, oil bleeding past?
Thanks in advance,
NitroJoe