Our m30 is blowing some white exhaust
when under light to heavy load. Everytime I check the coolant
it is low. I plan on removing the head
and I'm hoping it is just the head gasket
. I also plan on decoking the head and lapping the valves while I have it off. Is there anything else I should check or do while I have the head off?
Regarding the black smoke it does this under moderate to heavy load. I'm hoping it is injector dribble. The Kubota parts
place I purchased the gasket
set from recommended I go ahead and get an injector since the bench test labor would be the same cost as a new injector. They also said an easy way to identify the faulty injector is to remove the exhaust
manifold and see which cylinder is blowing black smoke. This sounds like a rather loud undertaking on a boat
but hopefully for a short period it won't be too bad.
Lastly the parts
guy mentioned how frequently he sells the head for the d1101(aka m30). Apparently they are prone to cracking when overheated and that may be the coolant
leak. Pressure testing was advised.
Well if anyone has advice
or comments let me know.