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Ask Ray M. Your Own Question
Ray M.
Ray M., Ford Master Tech
Category: Ford
Satisfied Customers: 3019
Experience:  30+ years in trade, Ford Master Tech, Journeyman Automotive Tech
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05 ford f350 6.0, runs fine when cold, gets up to operating

Customer Question

05 ford f350 6.0
JA: Are you fixing your F350 yourself? What have you tried so far?
Customer: runs fine when cold, gets up to operating temp and runs fine but go about 50 miles and then starts running rough when you let off the throttle, as soon as I press back on the throttle it runs fine. coast down to a stop light runs rough. sounds like it has a big cam in it? changed oil, checked fuel press, no codes thrown,
JA: Have you metered out the ignition system?
Customer: metered out ignition system? this is a diesel
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 11 days ago.
Category: Ford
Expert:  Ray M. replied 10 days ago.

when it starts to run rough is it also noisier than usual?