4.3 Water in cylinder 4
Okay, new to me 1900SR with Mercruiser 4.3(carb) Alpha(1 I believe).
Engine ran great on a 30 minute sea trial. 2 successful boat days. Then starting having some starting troubles and would die when pulling back to idle or when putting into drive sometimes.
Took it out of the water. Freshwater rinsed just fine. Put it away for a week til I had time to play with it. Took it out and got an engine alarm 10 Minutes after start. Found, thermostat was bad. Replaced it. But when I attempted to start, it clunked and didnít turn. Checked electric all good(battery @12.7V). Tried again, It surged slowly several times then started eventually. Wasnít normal, so I pulled the plugs.
After inspection Iíve got water(salt) in Cyl 4 and in the oil pan. Manual says to change oil, run it and check for water again, but Iím leaning towards a new engine and my mechanic seems to agree.
Any recommendations would be appreciated.
If I have to get a new engine can I upgrade to a 4.7 or 5.0?