- Sat May 26, 2018 8:18 am
#77023
That does not look like black smoke from an over rich mixture, or blue smoke from burning oil, it looks like condensation vapour from hot gasses passing thru cold exhaust, this will stop when exhaust warms up, Have you tried the following to set up your air screw, run engine until hot, set tick over screw at slowest tick over, turn air screw left or right to find where engine runs at fastest tick over, if engine speeds up, reset tick over to slowest it will tick over, re adjust air screw to fastest running, you may have to play with this a few times to get it right, once you have achieved the best running position you can road test and make small adjustments to the air screw to suit, but always remember the best air screw running position.