New cam / timing question. Also hose sucked shut

Yes, air locked. If you drill a 1/8" hole in the Tstat it will bleed that air out when you fill. I never topp off the cooling system while the cam's breaking in. I leave the top row of the radiator just covered, then top it off slowly as the temps come up and the air bleeds out and the coolant expands. It keeps it from bubbling out and gettting blown all over.