The issue i am having is when i go to start my 2005 f250 4x4 6.0 it takes about 2.5 minutes to get the oil pressure guage to start showing psi. Then it will start acting like it wants to start but never does. I have monitored the oil psi readings and they are good after 2.5minutes of cranking. the truck ran fine before i put new head gaskets on with arp head studs and changed all injector o rings. The reason i changed the head gaskets and put head studs in is because of antifreeze getting in the cylinders as all 6.0s have seen. Does anyone have any ideas as to what is wrong. I am going to call around today for a price on new o rings for the HPOP rails. thanks in advance.

 

So did you have all this work done and now the truck won't start or you had this work done ran it for a while and now it won't start?

 

It ran fine before I changed everything.

 

For one... i wouldn't hold your starter for longer than 15 - 20 seconds at a time. You'll burn it up.

And the problem lies somewhere in your work if it hasn't ran since the repairs described. the injectors may not be seated correctly or something could be unplugged? overlooked?

 

maybe the glow plugs are not coming on

you can crank all day and no start if glow pluga are not working

 

not glow plugs if hes not getting oil psi until after 2 minutes, are you low on oil? thats where id start

 

Im good on oil level and all glo plugs are good. For some reason I think im loosing my oil prime just like you would on the fuel if it was loosing its prime. So I figure I would start replacing o rings on the stuff I took off during disassembly so the last thing I could figure that needed replaced would be the hoop rails o rings the only code I would get when it would crank slow was for the crank shaft position sensor till it starts cranking fast like its going to fire then the code would go away.

 

are you leaking oil anywhere? that could be your whole problem right there is that sensor, try changing it and see what happens

 

1. Open your fuel filter bowl and make sure your getting fuel.
2. Reach under your FICM and make sure you are plugged in all three plugs.
3. Are you running a tune on it? If so, bring it back to stock.
4. After performing these steps, turn key back on and make sure glow plug light goes out and injector prime noise has stopped.
5. Attempt start again, but no longer then ten seconds.
6. If it does not start, cycle key on and off a few times, but do not attempt to start. What you are doing is verifying glow plug and injector prime is initiating and completing.
7. Attempt start again, no longer then ten seconds.
8. If it does not start, you have a plug loose somewhere.

 

I think i may have just realized what your problem is, There's some kinda tab or check valve thing in the oil filter housing that if it gets stuck open won't let the engine start. Maybe soemone that knows a little more about it will chime in and i'm not positive but that just struck me pretty hard.... might wanna give it a look