Universal 0 to 120 psi Deluxe Fuel Injection Pressure Tester Kit by SUR&R®. Accurately Diagnose Fuel Delivery Problems. Advanced kit tests faulty fuel pumps, pressure regulators, fuel lines, check valves, and fuel filters. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving your time and protecting you from unplanned expenses. It will help you find the problem quickly, and fix it as soon as possible.