another overheating problem

I have the tester for checking for combustion gases in coolant.
Engine running,unit has a chemical in it that reacts with combustion gases,gases sampled from rad while engine is running.

I also use a pressure tester.
If it was smoking white,coolant was passing through at least one cylinder would leave clear evidence by having a shiny piston.
A cylinder head dragged across gasket during installation could cause a leak too. Toss that haynes manual and find one that applies to your particular engine.
I believe somewhere on here in this forum is a link to manual downloads.

Getting head tested is a good step in the right direction.