I've been having an intermittent problem with a no start condition when hot. It has lately gotten worse to the point that I was dead in the water for about 25 minutes while i had the hood open to allow things to cool off. I closed everything back up hit the key and it jumped to life just like it was new. I've read through the tech folder as well as several other threads regarding no starts but haven't run across anything that is pointing me in any one direction. It cranks over very strong on new interstate batts that are only 6 months old and the SGII shows sync on the FICM and I'm getting a good RPM signal showing about 160-170 cranking RPM. Good logic power and showing 47.5 to the injectors. I'm running an atlas 40 from Ed in the FICM. I've wiggled wires and done a cursory look but I would think that if there was any chaffing that cooling off wouldn't affect it and it would be dead until fixed. Once it is running I have no problems, never let me down or quit on me while under way. Again, it is intermittent where I'll have 3 weeks or a month of no problem at all and then run into long crank times for another couple of weeks. I've made no mods to any of the HP oil system and have no leaks that I can see, no consumption between oil changes. If you can point me to another thread or give any incite I would greatly appreciate it. I'm in the middle of building a house right now and need the truck to be reliable. I'm pretty good with a wrench if I know what the problem is but I don't know where to start on this. It's an '06 model but an '05 build date on the motor.
Thanks Everybody,
Eric
Eric

 

Sounds like a STC fitting that a failing.

Dummy plugs also do the same, but the truck gets close to starting, then falls on its face.

Not sure if I read if your EGR was deleted or not, but it's just a matter of removing the turbo and you can easily get to the HPOP cover.

Srmastertech on YouTube has a good video explaining the procedure