An outboard motor unit contains an engine, propeller and gearbox, and is affixed at the back of many boats. Boat owners that use an outboard motor for their boats know that one of the disadvantages of this type of motor is that you often have to deal with the smoke produced during operation. An advantage of an outboard motor is that it can be removed to store or repair. Outboard motor smoke can be reduced in a variety of ways.
Put fresh fuel in your outboard motor's fuel tank.
Change your motor's oil from a commonly used mineral oil to a synthetic oil, such as Evinrude XD100 or Saber Synthetic. Making the switch cuts down on excessive smoking from an outboard engine because synthetic oil runs cleaner. Add the proper amount of oil to the fuel.
De-carbonize the outboard boat motor to reduce the carbon build-up that causes smoking, rough idling and poor performance by adding a fuel stabilizing additive to your fuel/oil mixture, such as Sea Foam. It not only stabilizes the fuel, but it also cuts down on the smoke produced by the outboard motor.
Start the outboard motor and let it run for approximately 30 minutes to circulate the stabilized fuel.
- Photo Credit Jupiterimages/Photos.com/Getty Images