When I brought Boracay there were five indicators that the engine
They were :-
1) Engine was old (25+ years)
2) Engine was hard to start
3) Engine had clearly done a lot of hours
4) There was evidence of corrosion
and poor repairs
5) There was oil
Together they told me that the engine was gone.
I was stupid enough to believe several mechanics and a surveyor
that the engine was good and wasted a considerable amount of time, money
and effort trying to get it to work.
I still find it hard to believe that qualified and experienced persons could get something so basic so wrong.