I have 1994 18' jetcraft yukon with an OMC 115 Johnson outboard motor designed to fit inboard. with a jet unit. 2 weekends ago I was running a shallow river and sucked sand into the engine. this caused the engine to overheat. It overheated 4 times before I could get back. I tried flushing the engine out from various points in the cooling system alot of sand came out. it semmed all was well. today I tried to start the boat but the engine seemed hung up, I could turn it by hand very slowly. I took the plugs out and it turned easily by hand but water was shooting out of the lower plug holes. Can anyone tell me whats wrong?
