Astra 1.4 losing power on start up - mack the knife
I've been having trouble with my Astra 1.4 K reg (petrol) car when I first start the engine. It loses power and judders, then suddenly returns to normal power. When the car has been running for about 5 minutes everything is fine and the car runs normally. Any ideas what may be causing this? incidentally the choke has always been faulty since I purchased the car requiring me to keep on revving the engine until the engine runs normally without cutting out. Could the problems be related?

Mack
Astra 1.4 losing power on start up - R.Turpin
From your description, almost certainly related to choke.