Greetings,

Bought my first boat!!! Very excited and want to learn to do my own repairs, if at all possible. Have a 1997 350 Mariner with a 2 Crusader 350 XL engines. Starboard engine temp is perfect and port engine overheats when over 2200. Had a mechanic come in fill coolant check hoses and replaced both engine's impellers thinking that would do the trick. It's a little better but still overheats and white smoke emits from port engine. I'm thinking of trying Sea Flush with Barnacle buster or Salt Away on my own as a next troubleshooting step and last resort replacing the riser(s). Those are big bucks come to find out. I've been watching you tube videos on this process. Anyone have a link or tips for flushing all the crap that may be in the engine making it overheat? Do I need to remove the impellers when doing this chemical flush? Before I purchased the boat it had sat for a long while...

Many thanks

Rick