Fuel Pump and Engine Vacuum Gauge This precision diagnostic tool is designed to help technicians and vehicle owners quickly and accurately test fuel pump pressure and engine vacuum levels. Built for longlasting performance and compatibility with most vehicles, it is an essential addition to any workshop or garage. Key Features and Benefits: Measures fuel pump output pressure up to 10 PSI, allowing you to identify weak or failing pumps before they cause performance issues. Reads engine vacuum levels up to 28 for accurate diagnosis of leaks, tuning issues, or other engine performance problems. Large 31/2 inch easytoread gauge face ensures clear visibility, even in lowlight conditions. Includes a set of adapters designed to fit most vehicle fuel and vacuum systems, making it versatile for a wide range of applications. Practical Use Scenarios: 1. Diagnose poor fuel economy by checking fuel pump pressure to ensure the engine is receiving the correct fuel supply. 2. Detect engine vacuum leaks when troubleshooting rough idling, stalling, or loss of power. 3. Perform routine maintenance checks to verify fuel system and engine operation after repairs or modifications. This tool delivers accurate, reliable measurements quickly, helping you reduce troubleshooting time and prevent costly repairs. With its durable construction and universal fit adapters, it provides both amateurs and professionals with a dependable way to maintain vehicle performance.