I have transitioned from the TR3 forum to the TR6 forum, having sold my TR3 just over a year ago and recently purchased a TR6. The car ran well on the 3 hour journey to it's home in my modest stable, but I sensed the carbs were running slightly rich. I put my Colortune on and discovered this was the case. But when I adjusted to a leaner mixture, "bunson burner blue", the car misfired and sputtered, backfiring through the carbs. I have gone back to a full rich mixture, the needle adjusted as far as it will go clockwise, and it seemed to run well. However, about 3 miles into my test drive, the engine begin to misfire and I was running on 5 cylinders. These Z-S carbs don't seem to be as adjustable as my old SU's. I found many detailed tuning instructions for the SU's, does anyone have a similar resource online for Z-S? Any other advice is welcomed.
Thanks,
Tony