I have a vibration and clunking noise upon slowing down in my 1987 volvo 290 outdrive.it is powered by a 4 cylinder volve aq series engine. I am trying to figure out if it is the the u joints creating this vibration and clunking sound or if it is some other problem. the unit only makes the noise on slowing down and it has to be a rapid slowdown to generate the noise. I have not owned a i/o unit before only outboards and am totally unfamiliar with the drive train noises being generated. the engine is very good with good compression and running attributes I did replace the large main pin on the outdrive it was wobbly and loose and was torking to the side. the boat is a 18 ft san diego classic stringari skiff and I want to restore it if I dont have to go to crazy on the power plant and drive units thanks for any help and ideas given.
