MGMiniman

Thanks for your response.
There is no apparent loss of coolant or evidence of coolant in the oil.
I got a good flow of coolant from the engine bleed and from the radiator and heater bleeds.
I checked the heater valve operation behind the kick panel from the control knob. Lever travels through 90 degrees easily.
The main radiator pipes get hot and the temperature gauge never goes above normal reading so the main flow through the radiator appears OK. When the cooling fan cuts in it cools the system fairly quickly and cuts out
How do I check flow through the jiggle valve. There is clearly no flow through the header tank.
The system was OK prior to the repair and the fitting of the part that must have been broken during the clutch replacement.
I can only imagine it was the 4 way connector or the PRT that was broken.
I have read in one forum that the connector can be piped up incorrectly or be faulty. Is that possible or likely?
Are there any images of this area available so I can check the pipe connections.
Thank you for your input. Can’t let this beat me.