Join Date: May 2012
Location: Jacksonville FL
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So I have a 04 6.0, I bought this truck about a year ago.
As soon I got it I did the following
Restore and Restore+ flushes
Replaced turbo Y pipe
EGT Probe install
Oil Cooler replacement
Updated turbo oil feed and drain lines
Updated standpipe and dummy plugs
Converted to Rotella T6
New oil and fuel filters
Blue spring upgrade
Replaced ICP sensor
So the truck ran great up until about a month ago, which my HPOP blew the ball out of the side of it. I took out the pump and tapped and plugged the hole, which when I put it back together the truck ran fine. After running it a week or so I noticed it had a new hot starting issue which over the course of the month slowly got worse. Basically the symptom would be a really long crank time with it finally starting to catch and then after another 4-5 secs of cranking it would finally start. It would only do this when hot, when the engine was cold it would start right up. Towards the end there would be times that it would just barely catch and then not start, then after another 30 secs of cranking it would finally catch and run. Once it started it never had any issues with stalling or any noticeable loss in power.
I figured somehow I must have toasted the HPOP, I just finished replacing the HPOP and the IPR, while I had it apart I also pulled off the J tube and pressurized the oil system with air to see if I could hear any leaks, which I found none.
So now after I put it back together I still have the long crank but instead of catching and taking 4-5 secs to get running it just springs to life really quickly. If I shut the truck off and start it back up it will start right back up but if I let it sit 10 minutes it will take a long crank to start it, it's definitely starting different than before I changed the HPOP.
Anyone have any other ideas?
At this point only other thing I can think of is maybe one of my branch tubes is leaking? Or maybe a bad standpipe? I didn't hear any leaking when I pressurized the system with air.