When you say "overheating" what do you actually mean? What temp is the gauge showing?
its not gone completely but its missing about a 2 inch piece.
I replaced the hose with a new one already.
I am almost sure
A 1971 motor like yours only has 1 ignition coil.-----So why is a mechanic telling you there are 3 on your motor ?----Drain the lower unit oil and see
Never hit the end of a puller as you can snap the crankshaft main bearing alignment pins in block, use a impact wrench(air/electric) or a flywheel holder
No, but if the spring that should be inside that intake hose is gone...