high vacuum can be had at higher than stock idle speeds (1000 RPM) gauge is probably o.k.
Try this, at 60 mpg release gas pedal and allow it to go to idle position and you probably will see elevated vacuum readings too due to higer than stock rpm level.
Get butterfly off of the transfer slot and position butterfly so it dont let vacuum get to transfer slot. Let the carb do its job Then adjust mixture screws to get nice stock style idle speed setting (probably 1-1/2 turns each), idle speeds should not be 1000 rpms- absolutely no need for these excessive idle speeds that is just asking for run-on during the nice warm Memphis summers this will also prolong the life of the throw-out bearing when sitting at red light holding the clutch down.
The transfer slot's soul duty is to help furnish additional fuel to engine as engine is in transition between the idle circuit and the main metering circuit- dont use it for idling-thats what the idle circuit is for. and the accellerator pump's duty is to provide extra fuel when throttle is abruptly applied temporarly interrupting the drawing of fuel thru the main metering system. reworking the accellerator pump is covering up the real proble
Knowing a "crapload" about the carb's circuits is not the same as UNDERSTANDING what causes what.
Last edited by preacher-no choir; 01/16/1204:44 AM.
