Before You Touch the Carb​


The secret to understanding the critical nature of Weber carb setup is the idle circuit — referred to as the low-speed circuit by Weber. This circuit is responsible for 80% of the driving operation. A properly set up Weber should give an improvement in fuel economy over most factory carbs, along with significant performance gains.

Before adjusting or re-jetting the carb, sort out the supporting systems first.

Step 1 — Check for...​

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