I've got this old '79 Johnson 150 that just won't seem to quit. Runs great. We took the boat to the lake on Saturday to finishing flushing out the keys salt from the spring break trip. She ran well, started easily. After cruising for about 30 minutes, I throttled down to putt for a while and enjoy the sun. I heard what sounded like a bearing whine around 1100 rpm's. I am not an outboard guy, but I would equate the sound to a water pump going bad on a car. It was intermitent, and she ran fine after that.<br />Being a 23 year old engine, I am always looking for things that could break. Is this a warning sign of the fact that she is about to "kick the bucket"? At some point I will repower, but to this point she just has been running too well.<br /><br />Any ideas or suggestions?