Am trying to attach photo (not attached, but you can email me for it
[email protected]) of dark water that I collected directly from exhaust. Does not run rough. Bottom painted and prop cleaned about 30 days ago. Impeller replaced and was not deteriorated. Kept in freshwater. This boat had a broken mast... took the yard longer than normal to sleeve (about 2 months), so it has just been sitting at the dock. Every couple of weeks I would run it, first cranking without starting to distribute oil, then starting, running for a few minutes at low speed, then high speed in gear for 5-10 minutes as I know the engine needs a load for proper maintenance. Right now this is a major source of lake pollution. I always look at exhaust after starting to assure water flow, which is why I know it went from clear to dark/dirty. Put a 1/2 gallon of exhaust water in a bucket and photograhed it. Very little oil on top. Was going to run for an hour tonight, but afteer 10 minutes water temp alarm went off.