The fuel pump is mechanical so the choke is not opening too soon, and it does the same thing even with my manual choke 750 performer. The choke is operating properly, you can see it slowly open. The car will run rough all the time until you shut it off and resart it, or leave it in first and drive it at 3000 rpm for 15-20 seconds, even this does not work sometimes. The car will run rough even if you let it get up to operating temp. It does not gradully get better, it runs rough or it runs perfect, more often rough.If any other info is required just ask.
Digger
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