Howdy all..nice forum!<br /><br />I was given a 18' Glastron open bow "ski boat" with a 78 Johnson 150 by my grandfather..nice grandfather!<br /><br />At any rate, the other week, after fishing, we started her up and headed back. Motor would not go past 3k, and would sputter badly at anything above 3k. Ran fine under 3k.<br /><br />Pulled the plugs...all starboard plugs were nice and clean. All port plugs were cruddy and oiled...running rich I suppose.<br /><br />I searched previous posts and found that it could be (most likely) either the power pack, stator, or a bad ground. I inspected the grounds and they all look good. No corrosion, etc.<br /><br />Also, I cannot locate a repair manual for this motor. Any ideas where I can?<br /><br />I would love to fix this myself, but without a manual, I have no idea how to test the stator or powerpack...and what the names are for the various components...it took me a week to figure out what the little black box was called (powerpack), but I knew by inspecting the motor and wiring that it controlled the spark for one bank.<br /><br />Also, the starboard Powerpack appears newer than the port one. Starboard is black in color, port is and old wornout brown color. FWIW.<br /><br />Any help would be appreciated....I am not sure where to begin.
