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Evaporative Emission System Leak Test

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL CHART

G03956523
 Evaporative Emission System Tester 310-F007 (134-00056) or equivalent
G03878958
 Worldwide Diagnostic System (WDS)
Vehicle Communication Module (VCM) with appropriate adapters, or equivalent diagnostic tool
CAUTION: The evaporative emission system must not be pressurized to more than 3.48 kPa (14 inches H2 O) or damage to the evaporative emission system can occur.
  1. Connect the Evaporative Emission System Leak Tester to the evaporative emission test port.
  2. Close the canister vent solenoid. For additional information, refer to CANISTER VENT SOLENOID CLOSING PROCEDURE .
  3. Pressurize the evaporative emission system to 3.48 kPa (14 inches H2 O).
  4. Monitor the system for two minutes. The system fails the leak test if the pressure falls below 2.0 kPa (8 inches H2 O).
  5. Repair any leaks as necessary.
  6. Repeat the leak test until the system remains above 2.0 kPa (8 inches H2 O) after the two-minute test period.
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