Thanks all, the plan is to replace the coil, easiest 1st move, like the idea of keeping it away from the block –- carb rebuild is next and maybe a bit of a heat shield between exhaust manifold and carb. Will let you know what works. Also going to add a fuel filter just because I should, although That’s probably not the issue since this is strictly a hot weather problem. And like rickmg only when the temps are pushing 90. At even 80° I can drive it all day with no problem.
