running rough after oil change - Ford Powerstroke Diesel Forum
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Old 03-03-2012, 06:01 PM
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running rough after oil change

I just changed my oil last weekend and ever since then my truck runs rough until it is warmed up. Its not as noticeable at idle but driving it, it will shake, and has no power until its warm. I used motorcraft conventional oil and motorcraft filter. My diesel mech told me when I first got the truck to not run synthetic in a 6.0, but from what little reading I have done lots of people do. Its an 04 f250 crew cab 4x4 auto with 160k miles. I bought the truck about 10 months ago and was told the ficm was replaced at 130k miles. I did check voltage on it and with my meter it checked good. On a side note the oil and filter I used set in my basement for over 4 months before I used it. I bought it when it was on sale. The fuel filters were replaced about 5k miles ago.

My main questions
Should I switch to synthetic?
Why would it just ask if the sudden start this after an oil change?
Should I go ahead and change the fuel filters too?

Any help is appreciated.
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Old 03-04-2012, 06:41 PM
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No help at all?
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Old 03-04-2012, 07:44 PM
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Double check the FICM when it is cold and make sure to check it at all three points as detailed in the FICM check procedure. Other common possibilities are batteries - have them load tested, and injector stiction. Have you scanned for codes?

MikeB
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Old 03-04-2012, 08:11 PM
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I have not scanned it. I suspected the batteries were going bad. The voltage is usually about 10.5 when the glow plugs are first initiated and doesn't get above 12 until way down the road. Would the batteries just all of the sudden start acting this way? I was just confused since it happened right after the oil change.
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Old 03-05-2012, 11:44 AM
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If this is your first oil change, or first time running in cold weather then you may want to do a search for "stiction". A lot of us that have the same problem as you and use an additive like Rev-X or Archoil AR9100. You can watch my videos in my sig to hear if your truck sounds the same as mine. I've tried both additives. They both work for stiction, but i think it's just a bandaid fix to some other problem/s.
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Old 03-05-2012, 08:14 PM
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Get the batteries load tested as soon as possible otherwsie you risk killing your FICM and your injectors. Get the parts store to scan for codes also.

I run synthetic with no problems and many many people here do also. In my opinion it will be much better for your injectors since they are fired with high pressure oil.

Your issue is unlikely to be related to the oil change. Check your FICM before you start dropping injectors.

MikeB
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