I have a 1994 2+2 100 hp mercury outboard.
Took the boat out - ran fine for an hour or longer on the way in engine started running really rough at low rpms below 1200rpms
Engine runs fine at higher RPMS - Idle is misfiring at low RPMS, #1 cylinder plug is carboned up others are even and wet...
I have a 1994 mercury 100hp that was running great until this weekend. I hit a large wave and it lost WOT. The engines starts and runs smooth just no full power. It runs at about 3200 RPMS, but wont' gain any more under load. I let the engine site for about 30mins and it started to get full...
