Basic Ignition System Checks (C-4): OPTI-Spark: Spark
WARNING: This page is about a different car, the 1994 Cadillac Fleetwood. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect tachometer wire (if equipped). A shorted tachometer will not allow vehicle to start. Check for adequate spark with Spark Tester (ST-125). Check for spark on more than one plug wire. When removing spark plug wire from spark plug, twist and pull on boot. DO NOT pull on wire.