1993 4.3 OMC Cobra<br /><br />Just made the first run of the season this weekend (gotta love the Carolina weather). While on the lake, I noticed a vibration at idle that went away with acceleration after approx 1200 RPM. Vibration wasnt major and the boat ran great all day otherwise. When I got home, ran it on the muffs and the vibration was still there at idle, so I dont think the prop or drive shaft is the issue...<br /><br />During the winter I resealed the drive and just put it back on the day before. Lubed everything that I should Gimble bearing felt good too.<br />I did forget to put the two orings that go around the main shaft. Though they looked to be in good shape. <br /><br />Before I pull the drive again, just wanted to get some thoughts. Is it those two orings? Gimble?
