As I write this my cooling system is apart for serice. Same sort of
issues, blocked tubes with growth and calcium deposits. The miximg
elbow was corroded and needs replacement. I did find what looked
like weeds. I cant believe that these got trough the strainer then
made it past the impeller and then into the tubes. It must be some
kind of growth. I have spent quite a bit of time in the tropics and
strange things grow out here. This is the first time I have done
this on my 6 year old boat.
As far as the carbon built up in the turbo. This is a trait of this
engine. It seems that everyone has this problem. Just put it on your
maintenane list. I have had it cleaned and serviced twice in the
past year. I have done a lot of low RPM motoring in the past year
(600 hours) wich will cause the carbon built up. You will find that
you will run at low RPMs in order to get better fuel economy.
Important for long passages.
Also, check your muffler for corrosion.
When you say that you got the engine up to 4,000 rpm is with the
prop engaged. What was your speed.
Good luck with your SM. Sevice her and she will treat you right. I
crossed from Guadaloupe to New Zealand this year and not a thing
went wrong with the boat. People with much more expensive and newer
boats had many more problems that I did.
There is a maintenance list written by Mr. Selo of Amel floating
around this site. Follow his recomendations and the boat will work
well. Maybe someone who is closer to you can send it to you.
ASM # 283
--- In email@example.com, "mike_ondra" <mondra@...>
engine, we rapidly blanketed the marina in what could easily havecrud.
Perhaps it was the restricted flow that resulted in extra highpushing
back from the injection elbow into the turbo which wassignificantly
carboned up. After a thorough cleaning of both the heat exchangerlook-
see would be appropriate at least every 500 hours.