In a continuing effort to solve an acceleration hesitation problem I have replaced filters, plugs etc and double checked timing with a timing light all as part of a general tune-up. The last bit of work included a clean out of the throttle body with carby cleaner (much needed!). As I was doing the clean out I found that the mixture adjustment screw ( 3mm hex via access hole in the metering plate/distributor assembly) was stuck. After giving a good clean and ensuring a firm fit with the hex key I was able to slowly work it free. Now for the problem (and embarrassment). I decided to work it free by turning two or three complete turns either way of the start point. Yep, you guessed it, I then proceeded to forget which way was which and got totally confused and lost in trying to find "home". Anyways I was, by trial and error able to get the car going again but I am not confident I have a reasonable setting - noting posts here indicate that a 1/4 turn is substantial.

Question: Is there a way to find a basic home spot for setting the mixture screw without access to co testers etc (note that this is an Aussie car with no electronic sensors to test). For instance there is a relationship between the idle adjustment screw and the mixture screw so is there a base setting for the idle screw I should set before trying to re adjust the mixture screw? Do I set coming from the "lean" end of the adjustment or come down from the "rich" end. Once I get a going condition should I then add a 1/4 turn or so? The car will "go" in a range of settings of about a complete turn and a half -if this makes sense.

BTW I have been following previous advice from bricksters in trying to solve this acceleration hesitation problem (quite severe) and although getting some improvement still not solved.

thanks for any advice.

cheers

Mike

1980 245 GL Wagon Auto
1978 244 GL Sedan Ato