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Junior Member
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Discussion Starter #1
I hava a 2010 f-350 king ranch with the 6.4 in it and i have 4000 miles on and i just notice the truck haveing an off sounding knock to the motor and some smoke but the smoke has only happend 1 or 2 times but when the knocking starts you can feel the truck slow down and you have to push the pedal alot more to make it go what could it be
 

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62 Posts
Does this happen when in exhaust regen mode(Drive to Clean Exhaust or Cleaning Exhaust Filter)? They have a different sound when in regen. They also have less power when in regen.
 
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