Billca, I have a 67 EType with 3 SUs and the thing that always frustrated me was how the manual tells you to "raise the lift pin 1/32 inch and listen what the RPM does. This is supposed tyo be how you adjust mixture! Ha! Right! I could NEVER hear any difference with these old ears, so I gave up on that method for mixture adjustment. Instead, after a rebuild I turn the mixture screws off bottom by 21/2 turns. Then I clean the plugs and drive around for a while. Then I take out the plugs and see which look rich and or lean and adjust in 1/8 turn increments. Then I drive the car some more (with re-cleaned plugs). I repeat this until the plugs look about right. Probably not the most scientific method, but it seems to work out ok for me. Of course the Gauges we're talking about are for a different adjustment.
Cheers,
Basil
[This message has been edited by Basil (edited 08-21-2001).]