07 - E350 super duty - with a 6.0
Crank NO Start.
Put in on my Scan Gauge today after I got home. FICM vlts good - SYC 1, good - ICV 24 vlts, good - ICP 0, not good - IPR 84.7% , not good (starting to freak out here) - Oil Gauge not reading any Pressure or moving. Now I am really freaking out.

I know I have some testing to do not doubt. Going to check oil pressure at the oil filter can on the bottom drivers side. Going to check for fuel pressure at the secondary fuel filter on top. Going to do ICP air test to check for leaks on the rails or injectors. Don't have the tool so going to my buddies house to have him weld a 1/4" nipple to an old ICP sensor and hook up some high pressure hose as my rig...

My History:

This is my first Diesel - so don't judge.
LIve in Florida. Bought van at JJKANE Auction. Old Florida Power & Light service van. Bought with 135K. Now it has 169K.
Developed a leak on the Oil cooler cover gasket or EGR cooler couldent quite pin point form exact place. Oil never found in water tank. Replaced oil cooler - EGR valve (was caked up to max) and EGR cooler out( was nasty black dirty ). Put everything back together ran great for about three weeks. Then it did it again. Crank NO Start. Changed out the ICP (due to word of mouth) and it worked. Three weeks later, again Crank No Start. Took out Air filter hose this time and Sprayed some diesel starting fluid and it cranked up. Ran good for about a week after that. Then it started doing it more frequently until I got towed home.

Test's Performed:
After doing some testing I found i had oil pressure through the bowl check. Fuel was good too. IPR was shot and replaced it. It had a big hole in the screen and allot debris inside of it. Did an Air Pressure test and air comes out of the both sides, the Oil fill tube and the air filter connection hole on Driver side.

My Questions:
Is air supposed to come out of those two areas. If so is there a certain air noise or what type of air noise should I look for to determine if it has a leak in the dummy's - injectors - oil rail plug seals -or stand pipes.

Any and all input will be helpful and taken into consideration so let me have it...

 

 

I got it covered for him, Jack.

Stewart

 

Did you close the IPR valve when doing the air pressure test?

 

Bismic, thanks for your response. Now that you mention it I did not run the 12vlts to the red wire on the IPR to close it. If I do this should air come out of the oil fill tube and the air filter hole on driver side valve cover. Should I be listening for a specific sound in the air coming out, if air is supposed to come out? When I plugged in the air hose and applied the air, air was coming out of both ports but again did not close the IPR.

Thanks in advance.

 

The 12V is on all the time when the key is on (it is switched power to the IPR). The PCM will apply the ground when the IPR is commanded to move.

 

Ok Thanks, so if I understood correctly just turn the key on before applying the pressure. This will close the IPR. Then i should hear or feel no air coming out of either port, Correct? IF I hear or feel air coming out of the ports its disassemble time for dummy plugs, coupler and stand pipes replacement, correct? Sorry if I am redundant. Its just my first diesel and want to get this right.

 

No - something needs to command the IPR to close, otherwise the air pressure test is useless.

The PCM does it when driving by activating the ground as needed, but that is only after the 12v+ power has been activated w/ the key turned on.

For the air test there are 2 ways to close the IPR

1. connect BOTH 12V positive and negative leads from a 12v power source to the proper IPR terminals. You can use an old IPR connector w/ wire leads and connect it to the battery or you can buy a special tool that connects to the IPR and the battery
2. backprobe the PCM pin that is the ground wire to the IPR and connect it to the battery negative terminal or a good ground ..... with the key in the "on" position

Red wire switched power Pin A (B+)
Yellow/red switched ground Pin (B-)

 

ok cool. Thanks, and my second question? No air should come out at this point because this is a closed system once the IPR is commanded to close, Correct?

 

correct .

 

Only thing I would add is after some time the oil in the HPOP might get displaced with air and leak around the shaft seal and/or the weep hole?
Would take some time. I only add this as I have seen it once, however that was after 10 minutes of air. Other leaks would show up long before that I would think.

 

 

He has on 07 though, not sure what you are hearing. That pump should not leak anything, unless you were hearing the injectors hissing a little. That happens and seems early builds more often, I think perhaps since the later builds hold more oil in the rails and don't bleed out as quickly under air testing.

 

Thank you all for all your repsonses. I was able to get the air test done and it passed. No leaks Wooo Hoooo. Was not looking forward to digging deep into the beast. Fired up the beast yesterday after putting it back together and clearing all the codes. Had to remove the IPR for the second time and clean out the screen again though. After it fired up again it started throwing all these weird codes at me. Had some patience and some whiskey, then cleared them and went on trouble shooting them. Service van is now running like a charm, back to work today. No codes and no service engine light on.

Thanks again to all, you were all a big help in this crazy process. Glad to have a support system that actually knows what there talking about and being jerked around spending tons of $$$. Keep doing what you guys do... its awesome.

God bless you all you and your families...

DYselfie out for now, peace.