All S.U. & Stromberg Carbs
All Triumph Models
Before any attempt is made to adjust the mixture on either S.U. or Stromberg carbs, it is of the utmost importance that there be fresh fuel in the tank and throughout the fuel delivery system. Adjusting fuel mixtures following winter or long term storage can be an exercise in futility due to the loss of “higher-end” fuel aromatics resulting in poor combustion/fuel burn characteristics.
It goes without saying that the ignition system and timing must be in good order, engine at operating temperature, no leaks in the induction system and carbs correctly balanced before attempting mixture adjustments.