It is the check valve on the metering side of the carb. The one pressed in brass bushing with the small black check valve inside. Drill it out and cleaned the carb and jets well after. When you prime the carb you will get a little air back through the jets but I get a reliable repeatable fuel flow.
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It is the check valve on the metering side of the carb. The one pressed in brass bushing with the small black check valve inside. Drill it out and cleaned the carb and jets well after. When you prime the carb you will get a little air back through the jets but I get a reliable repeatable fuel flow.