Tapping/knocking - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 11-14-2013, 05:23 AM Thread Starter
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Hi everyone, 08 F250 bought it used with 83,000 m. At about 120,000 after a trip to WV with utility trailer and 4 wheeler developed a tapping/knocking sound. Went away in a day now it's back. Does not do it cold but when it warms up it's there seems to be only at idle prob doing with acceleration but frequency must change and I can't hear it. Truck is running fine. What do you think rocker, valve. Is it a 911. Leaving next week for WV again.
jersey250 is offline  
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