2004 6.0 rough running 2 injector codes. Please Help! - Ford Powerstroke Diesel Forum
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Old 02-08-2011, 04:11 PM
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2004 6.0 rough running 2 injector codes. Please Help!

Hi Everybody-
Been searching for an answer here but have found no definite answer. My 2004 f-350 started running rough (especially in overdrive) Gets better when it downshifts. It starts fine and has not stalled. I noticed this while hauling a trailer and thought it was gelling and needed fuel filters. Treated fuel, replaced filters and more of the same. Computer is showing PO269 and PO284. The buzz test revealed nothing and said all injectors were fine. I do not want to throw injectors at 3 and 8 if this not the issue.

Any help is greatly appreciated.

Justin
Salisbury, NH
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Old 02-08-2011, 04:41 PM
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Check your fuel pressure, and FICM voltage.

Quote:
Originally Posted by dzlpwr1 View Post
Hi Everybody-
Been searching for an answer here but have found no definite answer. My 2004 f-350 started running rough (especially in overdrive) Gets better when it downshifts. It starts fine and has not stalled. I noticed this while hauling a trailer and thought it was gelling and needed fuel filters. Treated fuel, replaced filters and more of the same. Computer is showing PO269 and PO284. The buzz test revealed nothing and said all injectors were fine. I do not want to throw injectors at 3 and 8 if this not the issue.

Any help is greatly appreciated.

Justin
Salisbury, NH
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Old 02-08-2011, 04:56 PM
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Run a compression test
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Old 02-09-2011, 04:41 AM
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Ok Thanks guys- I'll see what I come up with.
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Old 02-09-2011, 04:57 AM
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I could be wrong, but I don't believe it is electrical. I'm more towards fuel feed imbalance or sticking injectors. Striction possible. Do you run a fuel additive periodically for cleaning/lubricating injectors such as Stanadyne, Power Service or Lucas Injector cleaner?
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Old 02-09-2011, 05:25 AM
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Thanks deucer. I usually do, but have not put any in since last summer. I am leaning the same way. I have since added power service but need to drive it longer to let it work through the system. Any thoughts on the Hot Shot's Secret oil additive? What they "claim" the product cures, also makes sense to me.
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Old 02-09-2011, 05:41 AM
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Oil additive: RevX 8 oz. It does work on eliminating striction.
Rev-X Application Guide | RevX Performance Oil Additive http://www.blackclouddiesel.com
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Old 02-09-2011, 05:48 AM
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When is the last time you changed your oil? How often do you change it? I would recommend a 5W-40 synthetic oil. You will notice faster cold starts and if you have stiction it will greatly reduce it if not get rid of it completely.
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Old 02-09-2011, 06:06 AM
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Last oil change went long... 10,000!! My employee wrote the wrong mileage down when he serviced it. UGGHHH. We normally always do 5,000! I typically run Rotella 15w-40, because that is what we run in all my heavy equipment.

Is the 5w-40 good in all temperature ranges?
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Old 02-09-2011, 06:16 AM
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http://www-static.shell.com/static/c...rotella_t6.pdf

I run 5W-40 also, but with RevX also...
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