Hi Guys. I am new here and to Volvo Penta stern drives. I recently bought an 86 Privateer with Volvo I/O. Unfortunatly I can't ID the model # for either the outdrive or the engine as they have been either removed or painted over. The original owner passed away, so the info I have is second hand. I think the engine is an AQ131 and the outdrive is a 270. I know with out this important info responses will be limited, but here is my problem. The boat sat unused for 2 years. I bought it, took it home checked the oil, plugs, coolant and normal things to check on a used engine. Everything was new as he had just got it ready to launch for the season when he passed away. After a good looking over and test running in a barrel I took it out for a ride. It ran very well in the river, so I went out into the sound and did some fishing. anchored up and fished for about an hour and left the motor running at idle, just to be safe because I was not real sure about the state of the batteries. Finished fishing and headed home, all was well. Temp, oil pressure and voltage all normal. ran about 15 minutes to the river at about 3800 rpm. All of the sudden the engine bogged down and stalled while running at cruising speed. Came to a stop and tried to restart. it cranked but didnt start. opened the engine cover to look for obvious problems and saw none. tried to start again and saw liquid flowing from the carb. At first I thought it was gas, but when I smelled and tasted it it was salt water. I got it home and checked the fresh water side of the system and it was still full of coolant, the crankcase oil was fine, no water. I pulled the plugs and cranked the motor over a few times and blew fountains of salt water out of the cylinders. I pulled the exhaust and intake manifolds off and there is salt deposits in both and obviously the cylinders were full. The only place that I can think that so much water could come from would be the exhaust system filling up through the riser elbow and getting to the top of the head and going in to the cylinders through the valves. The exhaust manifold does not have any major faults, I did the acetone pressure test I saw on this forum. So my question is how could I get so much water into the engine so fast?