Ignition System Checks

To properly inspect the spark plugs or to correct a condition, See SPARK PLUGS under IGNITION SYSTEMS in SERVICE & ADJUSTMENT SPECIFICATIONS - ION & SATURN "L" SERIES article.
Remove spark plugs and check for correct heat range, wet plugs, cracks, wear, improper gap, burned electrodes or heavy deposits. Verify that the spark plugs are of the correct type.
Check for proper ignition voltage output using Spark Tester (J 26792).
An improper spark plug gap will cause a driveability condition. Gap the spark plugs using a wire gauge gap tool.
Determine the cause of the fouling before replacing the spark plugs.
Check for damaged or misaligned spark plug boots.
Check the Electronic Ignition (EI) module for proper ground connection.
Monitor the Misfire Current Counters while driving the vehicle in the conditions that the symptom occurred. If a misfiring cylinder can be located, see DIAGNOSTIC TROUBLE CODE DEFINITIONS under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 2.2L SATURN "L" SERIES article.