Vacuum Hose: Inspection

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

1. Disconnect the vacuum hose from the intake manifold purge hose nipple and connect a hand vacuum pump to the nipple.
   Fig 1: Disconnecting Vacuum Hose From The Intake Manifold Purge Hose Nipple

   Courtesy of KIA MOTORS AMERICA, INC.
2. Start the engine and check that, after raising the engine speed by racing the engine, vacuum remains fairly constant.
   NOTE: If there is no vacuum created the intake manifold, port may be clogged and require cleaning.