SailNet Community - View Single Post - Gray Smoke -- under load -- Volvo MD2040
View Single Post
  #4  
Old 11-02-2009
klem klem is offline
Senior Member
 
Join Date: Oct 2009
Location: Gloucester, MA
Posts: 586
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
klem is on a distinguished road
Gray/black smoke is a sign of overfueling. Generally, when it is gray, that means that the fuel is not burning efficiently for whatever reason. A very common cause of this is worn out injectors that are popping off at too low of a pressure and have greatly enlargened holes. If you can find someone local with a pop tester, it should not be expensive to have them test it.

Taking some pitch out of your propeller is definitely a good idea.
Reply With Quote Share with Facebook