I just bought a 1993 Bayliner 2050, it has the mercruiser 4.3/Thunderbolt IV. The guy said he bought it, it ran once on the water and the second time he had it out it wouldn't start. He said he took it to a mechanic and the mechanic said he needed a whole new complete power unit for $6500(absolutely laughable). He sold it and now it is my problem.
It starts but dies the second you let go of the key switch. I checked the oil pressure switch and bypassing it changes nothing. I think it might be the ignition switch itself. I need pictures and diagrams for the ignition switch. It only has 3 wires coming out of it, purple, red, yellow/red stripe. I have 12Volts across the red to both the purple and yellow wires until I crank it and then they lose voltage. I suspect it is wired very wrong and most likely my problem.
It starts but dies the second you let go of the key switch. I checked the oil pressure switch and bypassing it changes nothing. I think it might be the ignition switch itself. I need pictures and diagrams for the ignition switch. It only has 3 wires coming out of it, purple, red, yellow/red stripe. I have 12Volts across the red to both the purple and yellow wires until I crank it and then they lose voltage. I suspect it is wired very wrong and most likely my problem.
