[Bruce_MO]

Maybe it’s flooded? Have a ‘53 that has always been a bear at hot restarts. If I shut it off (when hot) and immediately hit the starter, it starts in half a revolution. If I let it sit for a couple minutes, it’s very hard to start. I have to push the gas pedal down almost all the way and crank it for 8-10 seconds, and then it’ll catch and start. I think I have gas percolating in the bowls (two 94’s), and that’s flooding it and it seems I have to clear that out to get it to start. I’ve blanked off the power valves, have insulators under the carbs, and no improvement. A couple of your scenarios sound to me like you clear out the flooded condition and then it’ll start. Good luck; hot restart problems are definitely a pain. I think with some flatheads, you just have to find a combination of steps that work, and then repeat. I just finished a ‘46 Merc and it starts beautifully under all conditions. Wish I knew what I did right!