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Discussion Starter · #1 ·
I have a 2001 F 250 7.3 L. For a number of years now, after driving for a 2-4 hour period of time on the highway I get a very, very severe misfire with black smoke.
I immediately let off of the gas and it stops and usually that's the end of it.
I've replaced the cam sensor and one other item associated with ignition timing(recommended here).
It also stalls on rare occasions when I'm in traffic and slowing down.
We have a great local diesel shop here, but their focus is on injectors and fuel issues.
A brief discussion with them they thought it was a fuel issue, but I don't think so.
Any advice would be appreciated.
I'm leaving on a 20 hour drive next week and I would love to have this solved.
Thanks,
Roger
 
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