6.0 MYSTERY

[ModernDieselLegion]

Have a 06 F350 6.0. Replaced HPOP because ICP reading wouldn't go over ~260psi. After new HPOP installed pressure was slow to build and never got over 340psi. So tried a new HPOP and same thing. The ICP, IPR, and HPOP have all been replaced and the FICM has been rebuilt and still no start. The truck will start with ether and runs healthy (HPOP ~580psi @ idle). After letting it run for 15+min it will start back up after 10+sec of cranking. Getting no codes on Solus Pro. Getting fuel delivery and fuel filters are new.

Need help solving this mystery.

[ModernDieselLegion]

internal oil leak? have some tanks around and a hydraulic shop near by. anyone ever put a couple thousand psi of air to the oil rail to check for leaks?

[BigRed6.0L]

I would check the plugs in the oil rail for the injectors. The o-rings on these plugs like to wear and break causing oil pressure leaks.

[ModernDieselLegion]

Going to pull the valve covers next and see if there is a leak at the either of the rails. Will let you know what we find.

[kaya@bernhausen]

have you checked your base oil pressure?

[jimmyv13]

STC fitting? Stand pipes?

[jesilvas]

Originally Posted by jimmyv13

STC fitting? Stand pipes?

Good idea.

Originally Posted by ModernDieselLegion

The truck will start with ether

Pretty soon your truck won't start at all, ever again.

[ModernDieselLegion]

It was bad o-rings on the head-to-crankcase tube on the drivers side.

[jimmyv13]

At least it was the east side to change, but....you changed both sides right?

[ModernDieselLegion]

Originally Posted by jesilvas

Good idea.



Pretty soon your truck won't start at all, ever again.

im sure you know what you are talking about but we ALL know ether isnt good for these trucks but when a truck needs to be ran to complete high pressure diagnosis, aka visuals on the actual leak, you do it.

thanks for the input though man. just a heads up to all, it is cheaper and faster if you have your own shop to just change out all the o-rings on the rail.

also to note guys:

FORD DISCONTINUED the oil rail o-ring kit so you have to buy complete oil tubes with o-rings. 100 bucks our cost. LAME news for the little guys