hey guys just bought a sprinter and put a new 4AC in it as the other one was seized.

when cold it idles like shit and stalls but once its warm its all good idles fine. the timing it correct and the air fuel mixture is right.

the automatic choke is working as well, but not sure if the linkages on the carby are. when i turn the car on when its cold should the linkage move up completely and close of half of the carb? because it doesnt seem to move much.

also when accelerating it lags for like 1 second then goes like normal, any ideas? sounds like its sucking in air.

any help would be appreciated

steve