You need to check your ficm for sync and make sure ficm volts are not dropping below 45 Make sure your icp is getting power hpop needs to be over 500

 

Not entirely sure how to check sync, also hpop needs to be over 500psi I'm guessing?

 

Ok I missed the part where it runs. If you need to give her help she ain't getting enough on her own. Check both fuel filters. How does she sound when running? When you turn on the key how does your injector clatter sound? What code are you getting for check engine light?

 

I can't remember the code off the top of my head, but it was an icp sensor code. I haven't checked the fuel filters and I'll send a video of the sound of the injectors when I am off.

 

Nummy this is the OBS 7.3 section.

Ignore FICM and fuel filters since our trucks have a fuel bowl and mechanical pump.

If its still throwing a code we need the EXACT code number. Have you tried a new CPS yet?

 

Sorry I haven't been checking the forum, been working a lot of 10-12 hr shifts 6-7 days a week. Did some of my own detective work. Took my IPR apart cleaned it, changed oil, fuel filter. Then after the truck was slow to start. Ended up testing my batteries and starter. Starter cleared batteries showed 1/4 life for some reason. Ended up replacing them. Now the truck is idling almost like it has a cam? Tried to have Advanced, O Reilly's, Autozone all pull a code with nothing to show. I'm guessing their code reader isn't made for these trucks. I'll leave a video link, appreciate all the help.
https://youtu.be/ArxxOS3urbw
Keep in mind the truck has a new:
HPOP
Fuel filter
ICP sensor
Oil change
IPR is cleaned, not 100% if it could be the culprit.
I have a new camshaft sensor, but I have read they usually aren't the cause. Correct me if I am wrong.

 

Parts store readers usually don't work. You can get an OBDII bluetooth adaptet like an OBDLinkLX and get the Car Gauge Pro app on an Android device and do all the checks yourself.

The lope could be a loose connector to one of the valve covers. Make sure you didnt knock anything when working there.

Also, start it and rev it at 1000rpm for 30 seconds then see if it idles normally.

 

Checked the connectors connecting to the valve covers all look good no frays or anything. Revving the truck doesn't make any difference. Any other ideas?

 

Did you install the new CPS or just have one on hand? They cause all kinds of funky issues and are the easiest and cheapest part to replace to narrow down the issue

 

Just changed the CPS. Still idling funny, if not worse than before in my opinion or my problem is progressing.

 

I got an email showing the replies and video but for some reason they aren't showing here.

Knowing the code will be the most help.

I'd assume all the air has been purged since the HPOP install.

Sounds like it is missing a couple cylinders. Unplug the valve cover connections one at a time to narrow it down.

You can also take it WOT a couple runs and see if it clears. Sounds like mine did when I sucked air in to the fuel lines.

But again, the code and live data will pinpoint the issue

 

Typically, failure to start without ether is caused by low ICP while cranking. That can be a result of bad injector O-rings, faulty IPR, faulty, IPR wiring, bad HPOP, or possibly a low-biased ICP sensor. Like others have said, knowing the specific DTC(s) would probably be helpful.

If it's injector O-rings, and the truck isn't consuming a lot of oil (indicating oil going into the fuel), you should be able to spot a bad upper O-ring by running the engine with the valve covers off, or by pressurizing the oil rail in each head with compressed air and listening for it escaping.

Cleaning an IPR doesn't always work. It usually clears up the problem for a while, but not always. The fact that it does run likely means the wiring to the IPR is fine.

A new HPOP was installed, but it doesn't guarantee it isn't bad out of the box. It seems unlikely in this situation, though.

If it's a problem with the ICP sensor or circuit, but the HPO system is making enough pressure, the engine should start after extended cranking (I don't remember for certain, but I believe 10 seconds). If the PCM detects cranking past the time limit, it assumes the signal from the ICP sensor is invalid, and sends the fuel delivery command signal (FDCS) to the IDM anyhow in a last ditch effort to make the engine run. That will also generate a P1212 DTC.

Now I've gotten all that long winded crap out of the way. I'd strongly recommend getting yourself a USB to OBD-II adapter if you have a WinD'ohs laptop and downloading Forscan (it's free), or a Bluetooth adapter and Forscan Lite or Torque Pro for Android, and pulling the codes. If that isn't an option, I would start by checking injector O-rings for a large leak.

 

I got an email showing the replies and video but for some reason they aren't showing here.

Knowing the code will be the most help.

I'd assume all the air has been purged since the HPOP install.

Sounds like it is missing a couple cylinders. Unplug the valve cover connections one at a time to narrow it down.

You can also take it WOT a couple runs and see if it clears. Sounds like mine did when I sucked air in to the fuel lines.

But again, the code and live data will pinpoint the issue

I got the codes all figured out, everything lined out as well. Truck runs and drives good now. I've been trying to reply but every time I try to sign in on my phone I can't stay logged in? Not sure about that. The idling issue was indeed the IPR. (One of the codes) and I also had a cracked EBP tube, along with the sputtering was a cam sensor. Now that I have that all figured out I've learned more about the truck. I've been driving it daily and I love it. But here today I was driving it and instead of solid black smoke it was a grayish smoke? Keep in mind I have recently changed the fuel filter, it is Driven Diesel's fuel bowling delete kit. I'm assuming FPR or maybe I ran the tank too low and it picked up trash causing the filter to become dirty. Therefore making the cylinders lack fuel? Maybe I'm missing something. Another thing. Under the hood the FPR has a fuel pressure gauge that says just under 60 psi while idling.

Thanks again for the help and sorry for the late replies. Hopefully my signing in problems are fixed.