Kindly advised recently our vessels main engine cylinder head (wartsila type
:6l20 ) have leakage of water from cyl. Head exh. valve seat.
This seat is new design with one o ring (old design was with 2 o rings).
We checked every things and so many time we changed seat and oring but leakage was not rectified Recently we received new cyl.head (6 pec) and after installation on engine after few day again leakage happen.
For your kindly information our engine work with diesel oil.
I work with this type engine so many years but they were as generator (alternator with constant speed with burn heavy oil) and we have not any problem.
I will appreciate if you can help to us and any advised to me
Cant help to think perhaps you have counterfeit parts? Not sure if there are any service letters from Wartsila on this.