6.0 help

[Bradley3054]

Im doing this for a buddy, i dont know alot about 6.0s and was wondering if you could help guid me with this one. Its a 05 6.0 and runs for awhile then itll be hard to start and run rough. no smoke or fluid loss nothing else abnormal, anyone can help guide me here

[bulldog55964]

High pressure oil leak there are literally thousands of threads about it on here if you use the search

[KevinB]

Could be any number of things....I recently went through a similar issue.....it was my FICM......I would start there.

[grizz434]

look into a high pressure oil leak first, there are alot of o-rings in the high pressure system that could mess up a very sensitive system

[Tuscany]

Start simple, take batteries out and load test them separately, then test the FICM or throw a monitor in the truck that can read live data. E.g; AutoEnginuity, Dashboss, Scanguage II, Edge Insight CS/CTS. If all that checks out than start looking at HPO leaks. You can use any of the monitors listed above to check the vitals of the HPO system.

[Bradley3054]

a 6.0s oil pressure system is it gonna be similar to a 7.3 were if its leaking youll see oil in the valley?

[Tuscany]

No you won't see oil leaking in the valley. If there is oil leaking in the valley than I would first suspect the turbo oil drain tube or turbo oil feed tube leaking.

[KevinB]

Testing the batteries and FICM like Tuscany suggests....is minimally invasive and very easy to do with very few tools. HPOP....lot of work.

[Waz 6.0]

So are you saying it runs fine till hot? Then a no hot start issue?