Thread: Soot Exhaust smell only at highway speeds?
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Old 07-17-2013, 04:48 AM
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oldsinner111 oldsinner111 is offline
lied to for years
  
Join Date: Nov 2008
Location: Elizabethton, TN
Posts: 6,249
you must have blow by at highway speeds,if you have not done so adjust valves first.Then detrimine if its valve guides wore,or piston rings
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