This 1991 Malibu Euro F3 with a Mercruiser 5.7L engine accelerates fine but then starts surging and won't hold a steady RPM. Any ideas what is the problem?
I have a 2010 Mercury 115 HP outboard motor on a pontoon boat. It has 90 hours on the engine and it ran fine last year. After sitting through a winter in the Charlotte area (it was covered and had fuel treatment) it has problems. It will run while cold and if you keep cruising it will keep...