Can anyone tell me the functions of the two plug holes ("A" and "B") on top of the water pump of Scorpio diesel 2.5 L (see photo below)?
I have this engine in my boat and wonder how to connect these holes. Maybe "A" is for a zinc anode and "B" is for bleeding the cooling system?
Edited by Kjeles, 11 May 2018 - 02:08 AM.