I was accelerating and heard a pop and lost power. I limped my 06 F350 home and accelerated three blocks away from home. I stall when I took my foot off the pedal. I have just replaced my injectors, installed an EGR delete, and taken it in to the Ford dealer who thinks it is a high pressure oil leak. I have hooked up a air line to the icp sensor and supplied 12V to the ipr sensor on the hpop. All I hear is alot of air moving below the hpop. Should I go into the motor more and check the branch tube? thanks

 

Two things to check: All your turbo pipes and connections and will the truck restart hot. Also check your icp pressure. supplying 12v to the ipr valve may just be causing the ipr to open and dump everything to the crankcase, since the ipr "controls" the HPO. That may be why you are hearing air below the HPO. Usually on the later models it's the STC fitting, but read the thread on the HPO cover replacement.

 

I removed the branch tube adaptor and inspected the o-ring. I have also replaced the ipr valve, and when I pressurize the passenger side oil rail I hear a leak with the ipr valve open and no leak with it closed but during both of these situtations there is a large leak in the lower part of the engine is this normal?

 

I found a way to test branch tube for my 06 F350 6.0L. I removed the valve covers, the turbo, then the hpop. I made a solid rubber gasket for the snap to connect adaptor so it could be sandwiched between the branch tube and the stc adaptor. This then allowed me to eliminate any issues with the pump. I then made a adaptor to fit into the icp sensor in the passenger side oil rail with a ball valve to control the air flow. I have so far found that both front dummy plugs lower o-rings are leaking. I will post more info as I proceed.

 

I copied and pasted this post from Jack of All Trades. It's a pretty good explanation of IPR/ICP operation. It's also not necessarily for your specific year model, but it may also answer your question about hearing a leak down into the motor, which may or may not actually be a "leak". The IPR has to dump oil into the sump to control the oil pressure output of the pump. If it's dumping oil all the time then it will be a "leak" and you will, of course, have no pressure.


IPR: Injection Pressure Regulator
Output; The PCM controls the high pressure oil system by varying the duty cycle of the IPR. The IPR controls the oil bypass circuit of the high pressure pump. 0%=full return to sump (open valve), 100%=full flow to injectors (closed valve). The PCM monitors the system with the ICP input. The PCM can control fuel delivery to the injectors by increasing the IPR duty cycle which increases fule pressure through the injector nozzels. PID: IPR (% of duty cycle), MFDES Mass Fuel Desired an internal PCM calculation based on load demand (MG)

Symptom:
No/hard start hot or after stalling, usually re-starts after cool-down; Jerky, irratic idle; Possible DTC#'s P1211, P1212, P1283:
Usually caused by low injection oil pressure or regulator (IPR) valve. High pressure oil is used to pressurize and inject the fuel into the cylinders--each injector is essentially its own injection pump. The IPR is a by-pass valve that controls the high oil pressure depending on demand. The ICP monitors the oil pressure in the LH head.
Check for oil in the upper reservoir; it should be within one inch of the top; add oil as necessary. Verify that the correct oil is being used and that it is not thinned out.
For no-start concerns check Injection Control Pressure (ICP) sensor readings with a scan tool or pressure gauge (500 min), or with DVOM at pins 87 to 91 (.83volt min) while cranking.
By using adapter fittings and plugs you can isolate and measure each cylinder bank to see if there is a high pressure oil leak in one head, or connect both HP oil pump hoses to the pressure gauge to measure pump pressure. NOTE: The 98.5 and later HP oil lines have special couplers requiring special tool 303-625 to disconnect, and tools 303-627 and 303-628 to connect to the coupler along with a pair of F4TZ-9N332-A elbow fittings to adapt to the HP oil gauge hose.
If isolated pump pressure is low, short break-out-box pin 83 to ground to run IPR valve to full duty-cycle. If the pressure comes up (3600 psi) replace the PCM; if it remains low, remove and inspect the IPR o-rings for damage; a kit is available if they are. If the IPR o-rings are undamaged, replace the IPR valve. If there is still low oil pressure, replace the HP oil pump.
If isolated HP oil pump pressure is 500 psi, or only one bank reads low, remove all the fuel injectors and replace their o-rings using the latest kits P/N F8TZ-9229-AA.
If the concern is a jerky, irratic idle when hot, unplug the ICP sensor (will set a code, causes the PCM to default to a pre-selected IPR duty cycle) to see if it the idle stabilizes. If it does, check the ICP voltage with a scan tool or breakout box at pins 87 to 91 with the sensor plugged in and the key on/engine off. It should be .20-.25 volts. If the base ICP voltage is within specs, replace the IPR; If not, replace the ICP and retest.

 

My branch tube is okay. It was my stand tubes and snubber tubes that were leaking. I will be firing her up today. Run baby run.

 

My truck is running but now I have no turbo boost. ??? I will figure this one out shortly, but if anyone has an idea please post.

 

Any CEL? No boost I'd look at the boost control solenoid or whatever Ford calls it. From your post I see you pulled stuff apart, go over all your work...anything you touched check it.

 

Nearly 6 years old on the last post, do you think he's waiting still? Lol

 

Maybe he's just being thorough

 

LOL! I just have to chuckle when these old threads are resurrected from the dead, and on an OP who obviously either gave up on the truck and sold/traded it, or became a certified 6.0 master tech and never had another ounce of trouble!

 

Try changing your EBP sensor, if it's no good it won't seethe signal to you VGT to open the veins in your turbo.

 

Somebody need to lock this thread down.

 

This is the thread that never ends.....
Sing along everybody!

Last Activity: 11-08-2010 05:13 PM