Manifold Vacuum Experiment

TT5.9mag said

Mine usually gets a few taps with the Holley all encompassing adjustment tool and it frees up.
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LOL What would be the effects of just removing the check valve? I've seen people talk about it. Easy to see why it's there. To keep fuel from running back down so there will still be fuel right at the nozzle. That's why I've not removed it.