Spark Check
WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 2003 Mercury Mountaineer, 2003 Lincoln Navigator, 2003 Lincoln Blackwood, 2003 Lincoln Aviator, and 2003 Ford Windstar. However, it is still accessible from the selected car via links, so may be relevant.
Always perform self-diagnostic QUICK TEST to check for ignition-related fault codes, and repair as necessary. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. If no fault codes are retrieved, check for proper spark at each cylinder, go to TEST JB, step 17) under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. If spark is not present, go to TEST A: NO-START in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article.