Purge Port Vacuum Inspection

NOTE: Coolant temperature: 80-95°C (176-203°F)





1. Disconnect the vacuum hose (red stripe) from the throttle body purge vacuum nipple and connect a hand vacuum pump to the nipple.

Chart:

2. Start the engine and check to see that, after raising the engine speed by racing the engine, purge vacuum raises proportionately with the rise in engine speed.

NOTE: If there is a problem with the change in vacuum, it is possible that the throttle body purge port may be clogged and require cleaning.