6.0 Starting Problems - Ford Powerstroke Diesel Forum
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Old 10-24-2013, 10:52 AM
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6.0 Starting Problems

I am a diesel rookie but I now own a powerstroke 2006 F350 SuperDuty with a 6.0. I am experiencing a starting problem that I need your advice about. Everything has been going good until 2 days ago. I started to drive it and all of a sudden it started jerking and bucking like I had bad fuel going thru. Since I was at about at a 1/4 tank I thought that might be the problem so I stopped and put some fresh fuel in. Yesterday it ran find, no problems. Now today I can't get it to start.

Any suggestions as to my problem. All filters were changed last fall, along with oil change and coolant flush.

Thanks for your help.

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Old 10-25-2013, 07:40 AM
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Check the ficm voltage, you will need a monitor of some sort. ScangaugeII is available at Auto Zone for around $165.00 and monitors almost everything on the 6.0.

it needs to be in the 46-48 volt range to be solid if the truck has had a bad battery recently that will wipe out the ficm.

Start there plus engine needs to be in the 10+ volts during crank for it to start good. At 8.5 volts and lower it will not start, this can all be monitored by Scangauge.
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Old 10-25-2013, 07:50 AM
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I would change the fuel filters as well. Maybe you clogged them up running the tank low. Get a monitor and record Icp volts, IPR % and FICM with KOEO. I'd also find a way to check your fuel pressure.
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