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| 2003 to 2007 6.0L Power Stroke Diesel 6.0L Power Stroke Diesel equipped Super Duty and Excursion. |
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#1
Thu, February 10th, 2011, 09:50 PM
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Fuel pressure
Definately check your fuel pressure. You are describing classic fuel pump going out problems. I have two 6.0's in the past couple of years that the pump start and stop working almost at random. The first one drove me nuts till I drove it for a week with the fuel pressure gauge hooked up.
When the fuel pump is taking a dump the trucks will idle perfectly, start great, and then randomly crap out once you get them under any load.
__________________
www.littlepowershop.com 1-877-227-0823 
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#2
Tue, February 15th, 2011, 07:57 AM
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Here is the latest. For about 2 days it was pretty consistent a slight miss and doggy off the line. Results of checking the oil are that the oil level is rising. "Fuel in oil?" I then drove 275 miles. It ran great all the way. When I got home I checked the oil again to find the oil level even higher. I then took it to my local diesel shop. We are looking at a possible injector problem of some sort. And the cause...fuel pump. I will keep you posted
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2006 F-350 6.0L 4X4 AFE Intake, Banks Technicooler intercooler system, turbo back MBRP 4" exhaust, 70 Horse Depaco injectors, FICM and ECM/TCM Roll back, Gryphon programmer and Custom Tunes on the way 
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#3
Wed, February 16th, 2011, 12:23 PM
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From the shop: Oil sample shows 12% dilution...thats alot of fuel in my oil. This occured in less than 3000 miles. Currently pulling injectors to check and replace o-rings and crush washers. If nothing visible plan to have injectors tested. Mechanics tells me if that is all good, then it could be a cracked head. Hoping for the best. No word on the fuel pump yet. I test drove a 2011 6.7L yesterday, man that was sweet. Awsome power. May be my next move. Ha Ha
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2006 F-350 6.0L 4X4 AFE Intake, Banks Technicooler intercooler system, turbo back MBRP 4" exhaust, 70 Horse Depaco injectors, FICM and ECM/TCM Roll back, Gryphon programmer and Custom Tunes on the way
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#4
Fri, February 18th, 2011, 11:17 PM
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The shop found a bad crush washer in cylinder #4. Got it back and it runs great. I will be tearing the fuel pump out this weekend to clean and inspect it. Thanks for the input.
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2006 F-350 6.0L 4X4 AFE Intake, Banks Technicooler intercooler system, turbo back MBRP 4" exhaust, 70 Horse Depaco injectors, FICM and ECM/TCM Roll back, Gryphon programmer and Custom Tunes on the way
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#5
Sat, February 19th, 2011, 08:06 PM
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Glad you got something figured out with it...keep me posted if i can help you with it.
__________________
 Is in the php shop .. the best way to contact me is by email ......brad@phptune.com looking foward to hearing from and helping all of you. Brad Scott PHP
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#6
Sat, February 19th, 2011, 08:28 PM
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Brad you were a great help when I talked to you on the phone. I can only hope that my travels may bring me to GA some day. Thanks again for all the help. Bob
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2006 F-350 6.0L 4X4 AFE Intake, Banks Technicooler intercooler system, turbo back MBRP 4" exhaust, 70 Horse Depaco injectors, FICM and ECM/TCM Roll back, Gryphon programmer and Custom Tunes on the way
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#7
Wed, March 16th, 2011, 08:22 PM
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check
check your oil to coolant temp
mine did this same thing when it gets warm the oil gets to hot and the injectors start mis-firing, my truck was not overheating but the oil temp was running 30-40 degrees hotter than the coolant change the oil cooler flush the coolant system check for a bad injector harness also
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