Smoke from engine

[HoughMade]

If the idle mixture is too lean, it will not want to return to low idle once it's been revved up. I would go to 3.5 turns out and see what happens- have you adjusted the valves and balanced the carbs? That will not cause this issue, but it's tough to fine tune a carb without doing this first.

 

[Taras]

Ah I see, gonna make one more turn tomorrow and see how it behaves.
Is synching carbs the same as balancing? I examined the butterfly valve and they seemed to be in sync.
Valves not adjusted. Is that a "DIY" job, or better take it to a pro?

 

[HoughMade]

Valve adjustment is a DIY job as long as you have some mechanical skills and have downloaded the manual from this forum. Syncing and balancing are the same thing.

 

[lhaolpa]

Sounds like you have another problem,but you solved one,the starting.Check the fuel level[floats] in your carbs,sometimes if the floats are sticking,they'll act like that.Other than that,I don't have any ideas except maybe air leaks will effect the idle like that. lha