1995 Suzuki Sierra Repair Question
How to tune carbie
You sure its not an EFI fuel injection system instead of a Carb?
yes I'm sure it has an upper and lower idle screw .upper is on the back and lower is on the upper side
Find the throttle stop screw should be at the base of the Carb and try adjusting there-bear mind I'm not familiar with this vehicle-No refernces on it-Sorry
already done that but it still runs as rough as guts
Check and test the idle air controller/motor
done that .it's OK