Spark Check
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, 2003 Lincoln Town Car, and 2003 Lincoln LS. 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.