2017 emax 22L won't start

[MahindraMatt]

Mowed a field, got hot, cooled down, topped off low radiator cleaned screen etc ..
Started up parked in leanto and now it refuses to start.
Starter turns over & blows white smoke. Started off checking fuses and cleaning connections/fuse box etc. got it to start.
Next day no start again. Tested glo plugs and replaced, relay tested good. Replaced battery.
Still won't start.

 

[RjCorazza]

I'm not a diesel mechanic, but with the overheating and low coolant it sure sounds like coolant is getting in the combustion chamber(s).
White smoke can be attributed to unburnt diesel in the exhaust, or coolant in the cylinders. What does the exhaust smell like?

 

[MahindraMatt]

Smells like fuel. Coolant level in the radiator remains the same.