Reply To: Popping on left side on overun!

Home Forums All Things 750 Twin Technical Garage How To Fix It Popping on left side on overun! Reply To: Popping on left side on overun!


Hi Sam

It does sound like a fuel mixture issue. Have you checked the carb to head rubbers for perishing or leaks? If air can enter this will potentially weaken the mixture. Also are the carbs well balanced?

When the mixture screw is fully in place it shuts off the air. I always start at one and 3/4 turns out then use a colourtune plug to adjust either way as required. If you are not familiar with a colourtune plug it replaces the plug in each pot and as it has a glass base you can see the colour of the explosion in the cylinder and adjust until the colour is correct. Once happy with the settings re balance the carbs.

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