Re: Johnson 140 4 stroke oil dripping thru exhaust
My 2004 Johnson 140 (Suzuki) was showing a light oil/gas slick when idling for the past 2 years, oil level was not dropping. Idle was not as smooth as when new, motor has 45 hrs, so I had injectors cleaned. Oil slick problem was worse this spring and then the low oil warning came on with the oil level low. Based on this post and identical problems with Johnson posts I had dealer check oil cooler. They removed cooler, pressurized it with compressed air, and placed it in a water bucket. It was leaking, new oil cooler was installed and so far no more problems with oil loss or oil slick. I had noticed a light film inside prop before, and would see a slick appear around the water pump discharge previously. Sounds like Suzuki has a design problem with the cooler on an otherwise good motor.