1989 mercury 115 hp has no spark on plugs 1,3 and 5 after the motor stopped peeing for about 5 min. It did not stop running or over heat all the way but did get a Lil warn. I read that it is most likely my trigger. Can some one verify this for me and explain a little more and how to fix please. I know I need to replace my impeller and already am doing that and know how. I just need a little schooling on the triggers if that is what I messed up. Thank you.