[Jac Mac]

I have re-read the whole thread. You say that the cranking speed is not affected by the heat- Do you still run coolant for heater etc thru the manifold, if so stop it/block it, same goes for egr or hot spot from exhaust, sometimes with ether or quickstart it will evaporate in the manifold before it gets to the chamber if simply applied prior to cranking in a situation like this. Simple check for your ignition is to hook your inductive timing light up to the Coil HT lead when hot, tape the trigger down & crank it over, if you have spark then its got to be fuel. Make sure that the MSD has not eaten the towers out of the cap after this time, could be that the gap is to big at cranking speed, same goes for rotor button as well.