As far as testing the battery juice getting to the starter, do you think I could test the voltage at the starter when the engine is cold and again when the engine is warm? Would this reveal if the starting system is to blame??
How much voltage does it normally take to start a diesel (I'm guessing about 13v)
How many cranking amps does the battery need?
With the engine room ventilation: How are sailboat diesels normally ventilated?