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Evaporative Emission System Leak Test

Fig 1: Identifying Special Tool(s)
G03245178Courtesy of FORD MOTOR CO.
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 may 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 required.
  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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