Hello. I am helping my friend troubleshoot his mercury motor. We checked the spark the old way with the plugs out and pulling the rope with a spark plug grounded to the block. Number two wasn't firing at all but the other two were. I unpluged the wire going to the coil and tested it with wire...
Hello. I need help on my 1977 AQ 130. I have had this boat since new. This spring I rebuilt the head, put in new rings, main bearings, rod bearings and rebuilt the carbs.
The boat runs great if I stay below 4500 rpms, it will go all day. It will pull a skier out of the water great running up...