Rough running 351
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Senior User
Joined: Sep 2004
Posts: 212
Likes: 0
From: Portsmouth, VA
Rough running 351
93 f250, 351w, 2wd. Over the last month the engine has been running progressively worse, exhaust smells rich, loses power on sudden acceleration, "bucks" at crusing speeds. I've replaced the fuel pump and filter with no difference. maybe electrical??, tune-up done 15k ago, any suggestions.
Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
Begin by seeing what codes are stored in the computer to see if that can narrow things down for you. You can pull the codes yourself, the procedure is posted at http://fordfuelinjection.com .
