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black smoke

  1. Black smoke in exhaust while in gear > 2000RPM

    Diesel
    Calling all mechanics for ideas :) I have a 1990 Catalina 30 with a Universal M3-20 (18hp) engine. I discovered about 3 seasons ago if you run the engine in gear over 2000 rpm there is black smoke/soot/particulate matter in the exhaust. Since then I've only run the engine up to 2000 rpm and can...
  2. Not so simple Black Smoke / overloading

    Diesel
    Hi all, I have been reading these posts and have helped me a lot, unfortunately I have a problem which I have not been able to find a solution to so I am putting it out to the wider community in the hope for some assistance. We are currently docked in Philippines. Engine is 50 hp Perkins...
  3. yanmar 3gmf loss of power

    Diesel
    I've had no problems with my diesel engine for 7 years. It is 14 years old and has 1200 hours and very light use lately. Last time I filled the tank was 2years ago but I still have half tank. Suddenly, last week I took the boat out and noticed I could not get more than 4 knots barely getting...
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