Hard knock or thud when warm - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 01-19-2013, 01:12 AM Thread Starter
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Hard knock or thud when warm

Hello, I have a 03 F350 6.0 with 136k. I recently changed my air filter, oil filter, oil, fuel filter, and thermostat. Now when it gets to about 140-150 ect, it hits really hard. It has been pretty cold and does have problems with cold starts but I never had this issue until I changed all these things. Any opinions or suggestions would be great.
Jhenley63 is offline  
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air, fuel filter, knock, thud

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