To determine if it's the coil, you'll need to do some basic troubleshooting:
* Check for Spark: This is the most important step. You'll need a spark tester or a spark plug wire with a gap, and a helper to crank the engine. Remove a spark plug wire, attach the tester (or make the gap with the wire), and have your helper crank the engine. Look for a strong blue spark. No spark strongly suggests a coil, ignition module (common failure point in older Fords), distributor cap, rotor, or even a bad crankshaft position sensor (CKP) issue.
* Check the Coil Wire Connections: Make sure the wires going to and from the coil are securely connected and not damaged. Corrosion can be a problem in older cars.
* Visual Inspection of the Coil: Look for any obvious physical damage to the coil itself – cracks, burns, or loose connections.
* Listen for the Fuel Pump: When you turn the ignition key to the "on" position (but don't crank), you should hear the fuel pump briefly prime. If you don't hear it, there's a problem with the fuel system which will also prevent starting.
* Check the Battery and Connections: A weak battery or corroded battery terminals can also prevent starting. Make sure the battery terminals are clean and tight.
* Check the Starter Motor: If you hear nothing when you turn the key, the starter motor might be the culprit.
If you find no spark, the coil *could* be the problem, but it could also be the ignition module, distributor cap, rotor, or even a wiring issue. If you do have spark, then the problem lies elsewhere (fuel system, starter, etc.).
Recommendation:
Unless you have experience working on car ignition systems, it's best to take your Laser to a qualified mechanic for diagnosis. Improperly diagnosing and attempting repairs on an ignition system can be dangerous due to high voltage. A mechanic can properly test the coil and other components to pinpoint the exact cause of the problem efficiently and safely.
