Caleb Chalfant
New member
I recently purchased an old 82 Rinkerbuilt that has an 4cyl Mercruiser MCM 140 in it. The motor will turn over but there is no spark. I have replaced the ignition switch, coil, points, condenser, rotor, plug wires, and spark plugs. The points have been set to the specs on the side of engine block. When I try to start it I get a current through the wire that goes from the coil to the distributor cap but I get nothing through the plug wires. The cap looks brand new so I have not replaced it and when I jump a current from center of the distributor cap to one of the posts I get a good voltage reading. I cannot figure out what else could be causing no spark. Please help...