2007 6.0 Long crank to start. - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 02-04-2015, 11:17 PM Thread Starter
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2007 6.0 Long crank to start.

Hi Guys,
I've got an '07 F350, 6.0, no hpo leaks at 150psi. shop air. This thing has to crank 8 to maybe 15 secs. before it starts. The IPR goes to 85% at start. The ICP starts at zero and does a slow climb to start pressure. I've also checked the pressure with a gauge. Same. If I energize the IPR immediately after shut off, the system will hold 125 to 200psi for some time and the engine will start normally. De-energize the IPR and the pressure rapidly drops to 0 and it's back to a long crank. Thanks
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post #2 of 5 (permalink) Old 02-05-2015, 01:50 AM
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Re: 2007 6.0 Long crank to start.

If no leaks and icp is showing 0.. could be bad icp. Have you tried unplugging the icp and try to crank? Is the pigtail bad (oil soaked)

2006 F350 4X4 CAB CHASSIS w/ Truck Bed
Blue Spring, Mishimoto tstat
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post #3 of 5 (permalink) Old 02-05-2015, 05:31 PM Thread Starter
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Re: 2007 6.0 Long crank to start.

I have a scan tool. The ICP is working. I've put a gauge in place of the ICP with the same results, slow climb from 0 psi to start pressure. Any other thoughts?

Thanks
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post #4 of 5 (permalink) Old 02-05-2015, 07:19 PM
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Re: 2007 6.0 Long crank to start.

Does it start any different if nose is point down or up?
I assume you're parked level. Also what are your RPMs while cranking. If RPM is too low then you will have start problems.

2006 F350 4X4 CAB CHASSIS w/ Truck Bed
Blue Spring, Mishimoto tstat
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post #5 of 5 (permalink) Old 02-06-2015, 01:23 AM Thread Starter
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Re: 2007 6.0 Long crank to start.

Don't think I have a supply problem. What I did find is no oil behind the ICP. I took the ICP out to check it manually and noticed the rail was empty. This was after running the engine for ten minutes or so. The ICP is good. I replaced the HPOP because I was running out of ideas. While it was out, I pressurized the hpo system. No leaks at all at 150 psi for 1/2 an hour. WTF??? Oh, also the IPR is new. Any help is truly appreciated.

Thanks again!
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