🔧 A/C Manifold Test Gauge Kit: Boost Your Performance with the Performance Tool W89730 Review

ideal for vacuum leak detection, turbo testing and low price. I like it. The plastic end on the hose is suitable for NA carbureted engines and low pressure fuel pumps. Not suitable for checking the performance of the injection pump.

Used to diagnose a faulty vacuum pump in a 1985 Mercedes 300D. All I needed to know was if I was getting zero, a small amount, or a full amount of vacuum. An exact measurement was not required. It worked and it's cheap.

I only bought this gauge to check the vacuum and it's a little hard to read when all the other readings are on the front. I like that it can do other things as well, but if you just need a vacuum gauge, the others are easier to use.

This gauge, like Lisle's, arrived with an off-center pointer, which seriously affected the accuracy of the readings. My guess is that the sensors aren't necessarily junk, but have been carelessly handled and improperly packaged by people who don't understand or care how fragile they are. A good hard hit is usually enough to ruin them. I returned both of the above gauges and then went to my local auto parts store to buy one. The first one the salesman handed me off the shelf was perfectly…