Review on 🔧 Enhance Engine Performance with Edelbrock 4025 Uni-Syn Carburetor Balancing Instrument by Aaron Jimison

This unit is not working properly. If you buy one, look at it immediately. Didn't have time to use it until the 30 day return window closed (2 days ago). Raising the float in the gauge requires excessive vacuum, so great that the vacuum created in the carburetor throat at idle is nowhere near enough for the gauge to function. I have to rev the engine up to mid-range to get any response from the gauge. And before you ask, yes, the dial in the center of the instrument has been adjusted for testing across its full range. It's totally useless to me.