EWK Universal Car Fuel Injector Cleaning Tool Intake Cleaner Kit Pressure Test Gauge Adapter Hose THE REASON FOR WORSE GAS MILEAGE & FUEL ECONOMY - As Vehicles Age, The Carbon Building Up In The Intake System & The Combustion Chamber Clogs Up The Injectors And Causes Excessive Fuel Consumption. You Need To Clean It To Restore Engine Performance. CLEANING FUEL INJECTOERS CAN BE EASY - This Non-Dismantle Fuel Injector Cleaner Kit Can Be Used Right On The Car Without Taking Anything Apart. It Takes Little Knowledge Of Car Assembling To Do It. COVERS THE WHOLE FUEL SYSTEM - The Multi-Function Fuel System Cleaning Tool Gets Rid Of Carbon Deposit In Throttle Valve, Fuel Injector, Fuel Nozzle, Combustion Chamber And Other Parts Of The Fuel System. CONVENIENT DEVICE INCLUDED - Fuel Pressure Test Gauge Makes Setting The Outlet Pressure Easier And More Accurate, Also Enables You To Do Pressure Tests In Fuel System. UNIVERSAL APPLICATION - Come With Different Fuel Pressure Tester Adapters & Hoses, Fitting A Host Of Cars And Light Trucks.