Not a great day today.

I ran the engine yesterday to warm it up, and it boiled up after about 20 mins, with the rad remaining cool, hmmm. After seeking advice I tried removing any airlocks from the system today. Got some air out, ran the engine, same thing happened. Not happy. Looks like either the thermostat is jammed shut, or the water pump is knackered. Both of which are expensive parts. Doubly not happy.

On the plus side, reading back to my post of Jan 4th, I made mention that I couldn't complete installation of the oil pressure gauge till I got a suitable thread adaptor for the sender. Well, I just finished making one, from an old BMW wheel bolt! I'll fit it tomorrow and try it out.