EVAP System Troubleshooting
  1. Disconnect the purge air hose (A) from the EVAP canister and connect the combination gauge kit and tube joint adapter to EVAP canister (B).
  1. Start the engine, and raise speed to 3,000 rpm (min −1 ).
Does vacuum appear on gauge within 1 minute?
YES -
See EVAP two way valve test to complete. Evaporative emission controls are OK.■
NO -
Replace the EVAP canister. ■