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99 f-350 249,000 mile has ran good for the last 248,000 miles. Started having a rough idle about a month ago and getting had to start. Changed Glow plugs they where still factory. Ran good for around 5 days after that ......... one day headed into town started running real rough and died.Buddy pulled me back to the house. let it cool down and started up fine and ran about a mile down the road and rough the died. Dont know where to go now???? Have Code 1316, 470, 340...Replaceed CPS still orignal. no change. took V covers off and rechecked connectioons all good. Cleared codes still runs rough with code 470....... LOST NOW
 

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sounds like a fuel problem to me. I would check filter, pump, pressure, and injectors. maybe you got some bad fuel and need a bottle of good injector cleaner. hope this helps. good luck.
 
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