Quote:
Originally Posted by sd300td
The diagnosis was an old/faulty fuel dampener regulator screw on the IP.
..They also were able to adjust the fuel/air mixture at the same time for better running performance in cooler temps.
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With regard to the former, I'll give the mechanic the benefit of the doubt and ask the question as to exactly where he found this "fuel dampener regulator screw"??
With regard to the latter...........I can absolutely tell you that this is not a factual statement. The mechanic cannot adjust the fuel/air mixture on a diesel. A diesel runs with unlimited air at all times other than full power. At that point it runs with just enough air.