my Westerbeke 10Two diesel cranks but won't start. When cranking, light grey smokes cones out a hole on the port side. I don't know if that hole is an air intake or output. This problem started when exhaust elbow broke and probably sprayed water onto the engine. I repaired the elbow. I have trouble finding a diesel mechanic who will work on Westerbekes. Need suggestions.
Sailboat diesels do not have air intakes outside the boat, that would be an avenue for water to enter the engine which would be detrimental to the engine. It is an exhaust port.
How did you repair exhaust elbow? Once they start to fail the only viable long term solution is a new elbow, preferably a SS one from HDI.
Check the obvious, you have fuel, the filter is clean, the fuel valve is on.
Have you bled the fuel lines? If there is air in the line, then fuel won't flow to the engine and it won't start.
If you don't know how to do any of this, now is a good time to learn. Get a copy of
Nigel Calder's Diesel engine (Amazon link) book and start reading.