I have also done it.
When priming the fuel
lines I had the raw water
cock open and subsequently flooded one cylinder with saltwater.
now only runs on two cylinders.
So my questions are as follows.
1.what can happen when hydro locked ?
2.Can you hear if a valve/s is bad.
3. Can stuck ring/s be enough to cause the compression
loss so that this cylinder does not fire?
does a bent conrod create enough compression
I didn't like the sound so I tried the decompression levers to see which one did not fire.
when i turned the levers for number one and two (closest to the bow)
there was a clear change in rpm
and a "ohhfing" noise
from the air intake.
Doing the same on the cylinder closest to the stern the rpm
did not change an the only difference was a bit more "ticking" from the valves "rockers"
my conclusion was that it did not fire.
I also get raised oil
level in the pan.
in the oil
but I suspect diesel
(the oil is black but thinner) no greying or signs of water
run 3600rpm under no load.
(I guess i should avoid doing that until it fires on all cylinders)
What should I do next?
Compression/leak down test?
Should I try some "decarbon-derust-magic marvel oil fixit all additive" if the rings are stuck?
Or should I just take the top of and see what has happened?
Appreciate any help that might solve my problem