Emissions Compliance

Canada and some states or metropolitan areas in the United States require periodic emission, or Inspection/Maintenance (I/M) tests. All Ford products have been designed to pass these tests. If a Ford vehicle fails an I/M test, ensure correct model, year, test weight (less than vehicle's GVW) and correct calibration (California or Federal) are on the test report.

Identify which gas readings are high or low and identify in which mode the gas(es) failed. If all gases were high at the beginning of the test then decreased, the engine or catalytic converter temperature may not have been at operating temperature and stabilized prior to the test, or the vehicle had idled for an excessive period of time prior to the test.

If any emission component is changed, PCM memory should be cleared before repeating state emission test procedure. See SELF-DIAGNOSTICS - VILLAGER article.

• Check ignition system. See TEST JB under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check for vacuum leaks.
• Check fuel delivery system. See TEST HC under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check PCV system. See TEST HG under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check EVAP system. See TEST HX under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check intake air systems. See TEST HU under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check for exhaust system restriction. See TEST HF under SYSTEM TESTS in SELF-DIAGNOSTICS - VILLAGER article.
• Check condition of catalytic converter.
• Check cooling system.
• Check engine compression and mechanical condition.