93 Evinrude 115 hp V-4, new Powerhead, plugs, wires & prop too. The motor seems to idle OK.<br /><br />The motor will turn 5200-5300 RPM at WOT and runs just fine. When turning under 4500 RPM the vibration is intermittent - every 10-20 seconds apart . I put my hand on the top of the motor when...
