Tom,

One thing you might try is to is to see what type of smoke you're getting. Burning lubricating oil tends to be blue/white, which indicates your might have excess oil splashed up from the crankcase to the cylinder walls. Some splash is normal, that's the way the rings are lubricated, but if the oil level is too high you could get burning. If it's black smoke, it indicates poor combustion and unburned fuel, which can happen when a diesel is overloaded, or some other kind of fuel injection issue.

Neil Gallagher
Weatherly, 35-1
Glen Cove, NY


On 5/1/2016 9:59 PM, Tom Buscaglia via CnC-List wrote:
Alera is my second C&C, but my first diesel.  My prior 35MK 1 had an Atomic4.

I have been checking oil on my Yanmar about as often as I did on the A4, like 
once a season.  Last summer I learned the error of my ways.  But I over 
compensated for the low oil level and overfilled the engine.

Our engine only had 489 hours and was in excellent condition.  I just changed 
the oil today, but before that we did a sail.  I notice at at cripuising RPS 
she was smoking pretty bad.

Is this from overfilling or you you all think I did some real damage?

Minor error or major disaster...

Tom Buscaglia
S/V Alera
1990 C&C 37+/40
Vashon WA
P 206.463.9200



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