Smelly
Q1 Does motor have to be warm for the water to stream?
A I dont see why. It doesnt on my 115s, comes out after the chambers fill
Q2 How does extra PSI through poppets etc on the water sometimes needed to get it all going?
A Dont know Whats a poppet anything to do with foreplay?
Q3 What comes first - THermostat regualtion or water pump indicator?
A Water pump indication is first followed some time later by stage one thermostat operation ie thermo may open if water gets hot enough. Smelly, you did heat the thermostats in a sucepan on the stove to see them open didn't you poppet?
Chimo