My boat is powered by a Yanmar
4JH3HTE 100hp turbo diesel
. The engine
has about 1250 hours on it and starts and runs perfectly except that it smokes a lot (has always done so; my surveyor
said it's "just a smoky Yanmar").
When I bought the boat, the engine
had 830 hours and I tortured the poor seller trying to cure the smoking -- had both the turbocharger and injection pump rebuilt, fuel tank
cleaned out (twice), etc. -- at his expense. When I bought the boat, I also had all of the belts and hoses replaced, and installed dual Racor
primary filters. Later I replaced all of the injectors with new ones. It still smokes, and I have now given up trying to cure that.
The engine does not consume oil
, has normal fuel
economy, perfect temperature and oil
pressure, and starts up even in sub-freezing temperatures in what seems like half a revolution. So in general I'm pretty comfortable with the engine.
Nevertheless, the boat is now 12 years old and I don't want to take any chances this year -- I'll be cruising to Iceland
in some pretty desolate places and wouldn't like to get caught out without engine power.
What spares do you guys think I should carry? And what preventative maintenance
or checks should I do?
The exhaust elbow
is massive piece of stainless steel
which must have cost a fortune and looks bulletproof. I am not inclined to buy a spare of that. But maybe worth taking it out, cleaning/descaling it, and closely inspecting it?
manifolds of these engines are prone to cracking -- I have heard. A pretty expensive thing to carry as a spare -- maybe better to have flown in in case -- God forbid -- it crack?
Maybe 12 years and almost 1300 hours is enough for one heat exchanger
? Maybe I should replace it and keep the old one as a spare?
pump for sure, and a set of injection lines.
I have always had a bunch of belts, filters and impellers on board (never needed) -- but what about the entire water
pump? Maybe worth having a spare on board?
How about the fresh water pump? Good to carry a spare?
A starter? The Yanmar
ones cost a fortune, but you're really screwed if it fails underway.
I will not carry spare alternators, because I have redundant alternate means of charging
everything in case of alternator
What do you guys think? Anything else? Any special tools?