SHE RUNS!

After changing the metering unit, and removing and redoing each and every hose to the engine, she started flick of the key and ran smooth!!

Next issues...............

The car took a reasonable time to heat up, and the thermostat worked as it should. The twin fans cut in too at about half way, and boy do those Spal fans move some air around!!

But i noticed that the brand new header tank had started to expand quite a lot!!!!! Felt all water hoses and they were all hot, as was the radiator so doesnt seem like an air lock anywhere. One of the sensors hanging down behind the engine was the coolant sensor. On RST's ive had before, they have had a connector in the water hoses behind the engine that this screws into. But my car doesnt have this?? Thus nowhere to put the sensor. Would this be the issue?

Also, when it was running, i removed the oil filler cap and it immediately stalled. Usually they dont do this.

It also would not idle below 1800rpm.

Any ideas on the above?