This year the M25 in my C36 has been smoking under load, white smoke. I had just assumed it was steam, but now that I'm starting to put things together, I'm not so sure.
It won't rev up past about 1800 RPM under load. Prop and shaft are clean.
Fuel consumption seems higher than normal: I used about 1 gallon per hour during a one week cruise, mostly motoring. I recall in previous years about 0.4 gph.
Nigel Calder, in his Marine Diesel Engines book seems to think that if not steam, it's unburnt fuel. It's a bit confusing because he says "one or more cylinders are not firing," but "if the smoke persists" after warm-up, says it may be a defective injector.
The injectors were replaced ten years ago - about 1000 hours of use since.
So, engine experts - care to offer a diagnosis?
Thanks,
jv
It won't rev up past about 1800 RPM under load. Prop and shaft are clean.
Fuel consumption seems higher than normal: I used about 1 gallon per hour during a one week cruise, mostly motoring. I recall in previous years about 0.4 gph.
Nigel Calder, in his Marine Diesel Engines book seems to think that if not steam, it's unburnt fuel. It's a bit confusing because he says "one or more cylinders are not firing," but "if the smoke persists" after warm-up, says it may be a defective injector.
The injectors were replaced ten years ago - about 1000 hours of use since.
So, engine experts - care to offer a diagnosis?
Thanks,
jv