Hi guys and gals, has anyone had this problem. I have a Johnson 115vxsss equipped with a system check gauge, I'm getting a NO OIL light with a constant horn. The book calls for a intermittent horn. After checking oil, motor and condition of plugs ( for heat) all looked ok, boat made it back ok . My question is, is there a test that will tell me if the oil pump is bad or i have some other problem, shop manual is unclear on pump test. Thank You . Mike