Hello All
I've recently refilled the cooling system of my K engine in the 21.
Followed the various posting explaining how to fill a cooling system, adapted to a 21 particularity.
I've let the engine run for 1/2 last night to check for fluids leaks.
No leaks which is a relief
Engine got to temperature, fan switch on, temperature goes down, fan switch off etc.
However, there is no water flow in the return pipe to the expansion tank (the pipe from the head to the tank).
Does it mean I have an air lock in the head somewhere?
Jack