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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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Series MD7B in a yacht has developed a tendency to start OK

Customer Question

Series MD7B in a yacht has developed a tendency to start OK and idle OK but can take many seconds in gear when no acceleration is available but then slowly accelerated and quickly reaches normal running revs. One suspects a problem with the speed governor. What do you think and if agree where is technical advice on servicing the unit available.
Submitted: 2 years ago.
Category: Boat
Expert:  Jason replied 2 years ago.
Good morning my name is ***** ***** I will be helping you today. I don't quite understand your question. Are you having a problem shifting? Or are you having an issue throttling up after it has shifted?
Customer: replied 2 years ago.

shift to forward and reverse works fine. Throttling up to speed is sluggish at best and sometimes is very slow. Once throttle control has returned to normal performance thereafter seems normal.

Customer: replied 2 years ago.

shifting reverse forward works fine.Throttling up to desired speed is slow but after say 30secs to 1.5 mins speed comes up to selected level and works fine thereafter.

Expert:  Jason replied 2 years ago.
Is there any black smoke blowing from the exhaust when this happens? Has the boats bottom and propeller been checked for fouling?
Customer: replied 2 years ago.

No smoke. Hull clean as a whistle. Please discus my question about the speed governor.

Customer: replied 2 years ago.
Relist: Incomplete answer.
Customer: replied 2 years ago.

Relist: Incomplete answer. Provide plausible expert analysis of what I have told you

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