Review on 🔧 Enhanced OTC Tools 7448A Fuel Injection Cleaner Canister for Advanced Optimization by Kevin Bigelow

a problem. The instructions say to turn the air regulator counterclockwise until it stops. This sets the regulator output to 0 psi. then fill with mortar and connect hall air. Then turn the regulator knob clockwise to adjust the pressure on the gauge. The problem is that when you twist and turn the knob, there is no pressure reading on the pressure gauge. Then a loud popping sound is emitted from the tool as full shop air at 120psi flows through the tool and returns to the fuel tank. To avoid this, with the tool disconnected from the vehicle and without solution, let full shop air run dry through the tool. You can then attach the knob to the instrument. The rest of the instrument is well made. Meter is large and easy to read. Quick disconnects are similar to tire air hoses, but are of the "Hoffman Mini" type and have shredder valves.