John2411
New Member
My engine is giving out black smoke and what looks like carbon deposits above 1600rpm. Power is severely reduced and I can,t get more than 1900rpm. Any clues would be welcome
Volvo Penta 2030B Problem
- Thread starter John2411
- Start date
RobinBirch
Well-Known Member
Have you checked out the exhaust? The flexible exhaust delaminates over time and the 'blockage' restricts the flow of
exhaust gases which in turn limits the revs/unburnt fuel/sooty water.
exhaust gases which in turn limits the revs/unburnt fuel/sooty water.
tom52
Well-Known Member
Dirty bottom, fouled prop ?
Cantata
Well-Known Member
Based on recent experience with my 2020-B, I would check the exhaust elbow first, you are likely to find that it's blocked with carbon and crud.
peteK
Well-Known Member
It will be a blocked exhaust elbow as I had same symtoms on a Perkins M20 almost same engine and friend had same.Not cheap to replace though.
oldsaltoz
Well-Known Member
Just unbolt the elbow and remove it from the boat, stand it between blocks and add some degreaser, leave for 30 minutes then attach with a screwdriver and scraper, repeat if required.
Not expensive and not too difficult, best done each time you haul out if you run the engine a lot and at less then required rev's.
Avagoodweekend......
Not expensive and not too difficult, best done each time you haul out if you run the engine a lot and at less then required rev's.
Avagoodweekend......
Merlot
New Member
I had a heating problem on my MD2030 and found the exhaust outlet was heavily blocked with soot/tar which would have been affecting performance. I replaced the exhaust outlet, but still had the heating problem which I eventually traced to a blockage in the syphon breaker on the outlet from the raw water pump. When I cleaned the blockage the water flow increased 4 fold, and no more overheating.
The exhaust outlet off the engine certainly was blocked up though.
Bill
The exhaust outlet off the engine certainly was blocked up though.
Bill