When I first rebuilt my Carter BBD a little over a year ago, the initial results were great. Over 15 MPG in my '83 258 CJ-5 with a 4 speed manual. However, I was never able to get the idle speed correct, so I set about readjusting from the beginning. When I hit the vacuum piston adjustment, I found a discrepancy between the CJ repair manual, and the rebuild kit instructions. Below are pictures from both:
So, which is correct? Initially, I followed the method shown in the CJ manual, but as I think about the function of the vacuum piston, the rebuild kit gap location makes more sense. Any input would be greatly appreciated.