Fuel Blowing Out Carb Vent Tubes Under Heavy Throttle: Expert Opinions Please

toolmanmike said
Yep fuel level set too high I bet. The vent passage goes through the top of the metering block. Too high of fuel level and some healthy acceleration and out it comes. Holley has bowl vent extensions available. Does your carb manufacturer have them too?

"Holley fuel bowl vent baffles are used with the center-hung style fuel bowl. It extends the fuel bowl vent to near the wall of the fuel bowl and can effectively control fuel splash on the primary side when accelerating hard, or on the secondary side when braking hard."

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Yes, the carb has those I believe whistle vents they're called? Also, being my engine/trans sits in the van at a pronounced angle vs sitting close to level like in most vehicles means the fuel may be "level" but it will be higher against the primary metering block and lower against the front of the bowl, as well as higher on the secondary rear bowl, possibly with that vent submerged in fuel......hmmm. And hmmm again