[PeteF]

Holley experts: Should putting your finger over the bowl vents (either one) at idle cause the engine to die out quickly? Mine does this. This implies to me that the engine is breathing through the bowl vents, which I think it should not do. Carb is a model 4160/3310, 750 cfm vac secondary about 4 years old. I developed a bowl leak after coming out of winter hibernation, and installed new (Holley blue) gaskets. The metering block is flat and no contamination found anywhere. I didn't change float settings, but did adjust idle mixture screws. Engine runs fine otherwise, idles around 800 rpm and 15 inches vacuum. Any advice appreciated, thanks