6.0 no start when hot - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 06-16-2014, 09:31 PM Thread Starter
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6.0 no start when hot

My 06 6.0 I bought used about 5 years ago has been great. But recently it has been slower to start and getting worse. It starts fine cold, it's always ran a little rough but it's a 6.0. But after it has been running it won't start back up. I'm figuring it is HPO problem. I'm a Ag mechanic but really hate working on my own stuff. I've heard of similar problems just thought I'd ask and see if there were any others with the same problem.
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post #2 of 5 Old 06-17-2014, 06:18 AM
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No start when hot is usually a indication of a HPOP system leaking, (HPOP, stand pipes, dummy plugs, STC). You'll need to do a air leak test to pin point the location.

If you have a monitor, you can also confirm a HPOP system leak by checking the ICP pressure when cranking the warmed up motor.

A 6.0 shouldn't run rough, should run very smooth if the motor is heathy. Do you have a monitor to check FICMv, pull codes, Fuel psi, ICP, IPR, EBP, EGR? A rough running 6.0 is a indication of a issue (bad or dirty sensor/actuator, wire or plug damage, blocked hose/tube).


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post #3 of 5 Old 06-17-2014, 07:31 AM
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I would also suggest the air test, but if you haven't updated any of the following, I would suggest you do it while in there.
- Dummy Plugs
- Stand pipes
- STC Fitting

It's likely that one of those are your issue, but air test once they are swapped to ensure you don't have any other leaks. Injector top O-rings and oil rail ball tube O-rings are also possibilities.

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post #4 of 5 Old 06-27-2014, 10:06 AM Thread Starter
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New problem, was moving the truck, same 6.0 and it would shut off when I turned the key off. It took a few seconds for it to shut off. It did it three times, I thought I was losing my mind.
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post #5 of 5 Old 06-28-2014, 08:42 AM
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Quote:
Originally Posted by kstreams View Post
New problem, was moving the truck, same 6.0 and it would shut off when I turned the key off. It took a few seconds for it to shut off. It did it three times, I thought I was losing my mind.

If truck stays running after you turn key off, then it's a sign fuel or oil leaking into the cylinders, could be turbo seals, injector o-rings or copper seals.


"Rich is really good with knobs, his soft touch and attention to detail are like no other."-Portcity_gt

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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