Check the oil level, have you changed the oil recently? Used the same oil as you've always used? If the oil level is fine the next thing I would check is oil pressure.
If the sound you describe is what I'm thinking of....more often than not this will be a sign of the Hondamatic getting ready to head off into the sunset.....but check what I mentioned first jusssttt to be sure it's not something simple.
If the sound you describe is what I'm thinking of....more often than not this will be a sign of the Hondamatic getting ready to head off into the sunset.....but check what I mentioned first jusssttt to be sure it's not something simple.