Water in 4.3 mercruiser.
Hi all looking for a bit of help from all you old boating guys, i have been told that there is water in the engine of my boat, this is how it goes.
Had problems with engine and starter, lug broken on starter motor, engine not running correct.
took out of water, replaced a lot of parts, ie seals, bearings etc ( hard to know as what they call them here in Turkey is different from the USA/UK).
Tested back in the water, everything ok, go back to the UK for 2 weeks, had bad rain while i was away. Go down to the boat and try to start, turned over 3/4 times then click.
Thought it was the battery so charged up, back down and tried again, same thing.
Tried a couple of days later same thing, so got mechs to check, they took the starter off and tested ok, checked battery ok. They now tell me that there is water in the engine, coming in through the exhausts.
My question is if the boat has not been running, just sitting in the marina how can you get water into the engine, and even if there was water in it would it not still turn over??
I am no mechanic, but i would have though it still should have.
Is all this possible or am i being taking for a ride here in Turkey??
Hope there is one of you guys who have the knowledge regarding my prob?