RCinNC
Well-Known Member
I originally posted this in the off-idle stumble thread (and thanks RonH for replying there), but stuff tends to get overlooked in a 34 page thread, so I deleted my post there (so I wouldn't be cross posting) and I'm posting my question here. If the mods feel like this should be moved back there, I understand.
I've done multiple throttle body synchs using the CarbTune since I've owned my bike. There came a point where I was having some difficulty getting the TB's to synch up, so I decided to try the method used to fix the off idle stumble and see if that made a difference. It did, and I was able to get the throttle bodies synched. However, this got me to wondering. When they set the airscrews at the factory, one throttle body is made the standard (on my bike it's the left), and you're supposed to synch the other one to the standard. My question is, how do they determine at the factory what the airscrew adjustment is on the standard throttle body? The off-idle stumble fix is based on turning out the standard airscrew 3/4 turn factory setting, so do all the screws on the standard throttle body have the same setting from the factory? Doesn anyone know what the standard setting is? The screw can be turned all the way in until it's flush with it's seat, so is the standard setting determined at the factory by turning the screw all the way in and then backing it out a specific amount? Theoretically, a guy could buy a used S10 that already had this fix, decided he wanted to try it, and end up turning out the standard further than recommended in this fix. So, what's the factory setting for the standard? RonH suggested the factory setting was for the standard airscrew to be turned all the way in; can anyone verify this?
I've done multiple throttle body synchs using the CarbTune since I've owned my bike. There came a point where I was having some difficulty getting the TB's to synch up, so I decided to try the method used to fix the off idle stumble and see if that made a difference. It did, and I was able to get the throttle bodies synched. However, this got me to wondering. When they set the airscrews at the factory, one throttle body is made the standard (on my bike it's the left), and you're supposed to synch the other one to the standard. My question is, how do they determine at the factory what the airscrew adjustment is on the standard throttle body? The off-idle stumble fix is based on turning out the standard airscrew 3/4 turn factory setting, so do all the screws on the standard throttle body have the same setting from the factory? Doesn anyone know what the standard setting is? The screw can be turned all the way in until it's flush with it's seat, so is the standard setting determined at the factory by turning the screw all the way in and then backing it out a specific amount? Theoretically, a guy could buy a used S10 that already had this fix, decided he wanted to try it, and end up turning out the standard further than recommended in this fix. So, what's the factory setting for the standard? RonH suggested the factory setting was for the standard airscrew to be turned all the way in; can anyone verify this?