This vacuum fuel pump pressure tester is suitable for testing pressure and vacuum system. This kit will help you diagnose improper timing, burned or stuck valves, leaking manifold, improper fuel mixture, sticking choke and more without the use of a pump. It can easily read the fuel pump output pressure to 10 PSI and engine vacuum to 28″ HG. Additionally, it includes a plastic blow-moulded carrying case for easy transport, safe storage, and quick organization.