hi all,
my B310 have transplant A15 engine
which comes with a hitachi carb with auto choke (from nissan C20 van)

anyway my auto-choke seems like comes slow and also 'switch-off' slow. i means when i first start the car the idle is norma, then after few min will got high RPM ( chock working) , and the high RPM will back to normal (choke disable?) after about half hour or more of driving.
this kinda hurt the fuel consumption a lot.

is there anything wrong with my carb? i wan to adjust the auto choke, can anyone teach me which way to turn for longer or less choke time? ( i read somewhere in tech section here need to loosen 3 screws and turn the thing.. but i not sure which direction)


anyway, i not sure if the mech got those hose right. Is there any vacuum hose suppose to connect to the intake part after the air filter? cause there r many hose and one split with a 'T' joint and connect to the 'box' after air filter (before reach the carb)
but the pic i saw from tech section on this site only got 2 vacumm hose one for choke pull-off another for throttle pull-off?
anyone can help me with this?


thanks all