I took the autocoke inside. Was 10 degree outside, 22 inside. Set a black mark at the point max retraced. Then I connect 12V DC, choke needle then slowly extends 6mm. After this I disconnected 12V. The needle retracts only half way back after 10-20 minutes. I put the choke in the fridge for one hour, it still remain in partially retraced. position. I believe the choke must be defect as it does not retract fully after beeing cooled down? Scooter symptom : difficult to start when very cold, or have been unused for a few days. When running is no symptom.