Yanmar engine coolant leaking in bilge

[AleCiotti]

Hi guys, my Yanmar engine (4jh3-hte) loses its coolant pretty quickly and I find it all in the bilge under the engine itself.
I'm thinking it could be from the fresh water pump weep hole (haven't checked yet as my boat is in Spain and I live in Italy).
I will also try to clean the heat exchanger as I think it hasn't ever been cleaned (close to 3k hours run time).

Is there anything else I should look at?
Thanks in advance!

 

[Irish Rover]

Hi guys, my Yanmar engine (4jh3-hte) loses its coolant pretty quickly and I find it all in the bilge under the engine itself.
I'm thinking it could be from the fresh water pump weep hole (haven't checked yet as my boat is in Spain and I live in Italy).
I will also try to clean the heat exchanger as I think it hasn't ever been cleaned (close to 3k hours run time).

Is there anything else I should look at?
Thanks in advance!

I had a leaky coolant drain tap on one of the 4jh3te engines on my previous boat.

 

[38mess]

Is the coolant cap working as it should?