Checking Purge System

Checking Purge System:

PURGE PORT VACUUM

INSPECTION




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

Purge Port Vacuum Curve:

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 to see that, after raising the engine speed by racing the engine, vacuum remains fairly constant.

NOTE: If there is no vacuum created, it is possible that the intake manifold port may be clogged and require cleaning.