Purge Port Vacuum

CHECK CONDITION

Engine coolant temperature: 85-95°C (185-205°F)





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





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.