Inspect Intake Manifold Evap Purge Port

(a) Stop the engine.

(b) Disconnect the EVAP hose from the intake manifold.

(c) Start the engine.

(d) Use your finger to confirm that the port of the intake manifold has suction.


Test Result

Suspected Trouble Area

Proceed to

Suction applied

EVAP hose between intake manifold and purge VSV


No suction

Intake manifold


(e) Reconnect the EVAP hose.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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