6.9 liter problems
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New User
Joined: Dec 2008
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6.9 liter problems
I have a 87 f-250 with a 6.9 liter diesel with no turbo. it has very little power in acceloration and it is running rough. i have changed the air and fuel filters with no help. i have been told it is probably my injectors. any help would be great.
Thank you
Josh
Thank you
Josh
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
Hi jadams65, welcome to FTE! I would ask you question here, at the portion of the site that deals specifically with the pre-Powerstroke 6.9L and 7.3L diesel engines.
https://www.ford-trucks.com/forums/forum117/
Elder User
Joined: Dec 2007
Posts: 854
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From: woodville, tx
My personal opinion, try running seafoam in the fuel filter. I personally had great luck on my 87 6.9. i had no power, 3-4 mpg, and a ton of white smoke at all times. After just running the one can in the filter, i have a lot more power, about 14-16 mpg, and i see some black smoke at times. But as i said, this is my own personal opinion and experience. A lot of the guys here say Not to use the foam.
Elder User
Joined: Dec 2007
Posts: 854
Likes: 0
From: woodville, tx
It's a cleaner for, it claims, all engines. I know O'reileys carries it. It cleans the carbon build up out of the engine. For gassers it gives the instructions on the can. I have used it on my wifes 96 jimmy, daughters 97 and 99 cherokees and my 87 6.9, with good to great results on all.
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