Complete fuel pump and vacuum gauge tester. Test Fuel Pressure on Mechanical & Electric Fuel Pumps. It will also Diagnose Improper Timing, Burned or Stuck Valves, Leaking Manifold, Improper Fuel Mixture, Sticking Choke & More. It Includes Rubber Hose & Brass Fittings for Compatibility with Most Cars.
 Test fuel pump output pressure to 10PSI.
 Read engine vacuum to 28″ HG.
 Check carburettor settings and Calce adjustments.
 Come with large 4 ” diameter gauge w/ Heavy Rubber Jacket to protect Against Impact and Grease & Grime
 24″ long vacuum hose.
 Adapters suitable for most vehicles.
 Product instructions included.
 Case included
 Please note: The dial may not point to 0 when you receive the item or after a long time of use. Adjusting the gauge is s a normal operation. Please follow these steps: 1. Remove the rubber coat from the gauge. 2.Use a flat screwdriver to lift the upper half of the gauge. You can lift a little bit from one side and then from opposite direction. 3.After remove the upper half, please use a screwdriver to adjust the screw on the face of the gauge and set the arrow to 0.