Vacuum Hose Inspection

EVAPORATIVE EMISSION CONTROL SYSTEM

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.

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.