Well one step forwards, four steps back
Been busy, first there was a noise from the water pump area didn't like it so took off the alternator to check bearings and noise still there.
So next was using my new spare water pump. (Once the old pump was off there was play on the shaft)
Good job as the rad needed a flush still had some red stuff powder floating in the system.
Bolted it up and noise gone job done.
Then the cold start issues appeared so cleaned all parts ISV adjusted idle screw and I had to screw the idle screw all the way in to get decent idle! THIS I'll come back to later.
So proceeded to test the metering head and all was good, but the car stank of rich fuel so started to look for air leaks none found.
Then adjusted the co screw on the metering head (anti-clockwise leaner) and found it not responding too well as you know small increments of the Co setting around 2% of mixture.
Scratching head morning time still hard to start but after one minute up to temps its all good no hunting so ISV working well!
Last attempt changed out the spare the Warm Up regulator to see if it made any difference and she started better, but initially though there was low pressure due to running it dry last week.
Taking the fuel pipe of the WUR might have let air locks out, but getting there!
Finally today thought why the idle screw still had to be screwed all the way in and realised something the air leak was the idle screw!!!
Unwound the dam thing out and sure enough the seals were chewed!
Swapped out the idle screw for my spare one and bang adjustments were stock again still have to wait for a cold morning to fully see if the WUR does it job, but idle seems to be more stable bliping the throttle
Next who bloody well knows?