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I put in a brand new one and it continued doing the same thing. I suppose even a new one could be defective. I do have another unused one. I'll put it in when I go to the boat tomorrow.
Engine is 1987 7.4L. In going through the Merc diagnostic chart I get to the box that says disconnect white/green wire, insert spark tester in high tension lead from coil and then strike grn/wht wire to ground. I get spark. When I try to reinsert the grn/wht bullet connector back into its...
Does anybody have a line on a Thunderbolt IV ignition module, part no. 15248T02? Apparently the Merc factory is not shipping new ones. Most dealers don't keep them in stock because of high price. Hoping on has it on the self from prior shipment. Had no problem getting one about 6 years ago...
Have a 7.4L with TB IV ignition and Edelbrock 1409 carb electric choke and mechanical fuel pump. When cold engine is hard to start. Fuel is good, plenty of cranking power, good spark. With one shot of starting fluid it will fire right up. Idles and runs fine. Will restart after shutting down...
