VW Mk1 Cabriolet 16v cold start idle problem.

Mk1 Cabriolet with 16V engine swap. I have done a full fuel/ignition tune up and I still have this cold start idle problem. Cold start injector is working. The car runs well when warm. Any thoughts?

[@logant724]

Check my uploads for an update/fix! My problem turned out to be a knackered knock sensor! Tighten to 7-9 ft lbs

[@tshepangmohapi4049]

Where you able to fix this... i have the same problem on my velociti

[@Degens-n-regenes]

Steering wheel and hun assembly?