Checking Condition

Engine coolant temperature: 80-95°C (176-205°F)

1. Disconnect the vacuum hose from the throttle body EVAP Canister purge hose fitting and connect a vacuum pump.
   Fig 1: Testing EVAP Canister Vacuum Source

   Courtesy of KIA MOTORS AMERICA, INC.
2. Start the engine and check to see that, after increasing the engine speed, vacuum remains fairly constant.
   Fig 2: Engine Speed To Vacuum Chart

   Courtesy of KIA MOTORS AMERICA, INC.
   NOTE: If there is no vacuum created, it is possible that the throttle body port may be restricted and required cleaning.