Repairing the Ignition Coil in a 1967 Ford Mustang

Repairing the Ignition Coil in a 1967 Ford Mustang

Diagnosis

If your 1967 Ford Mustang has been experiencing random misfires, poor fuel efficiency, or a rough idle, this could potentially be due to a bad ignition coil. Before proceeding to the repair steps, ensuring the problem lies with the ignition coil is very important.

The diagnostic process to test the ignition coil involves the use of an Ohmmeter. Disconnect the ignition coil from the Mustang's ignition system and remove the coil while paying attention to avoid damage to the wiring or associated systems. Connect the Ohmmeter to the ignition coil's primary terminals and measure the resistance. If the reading does not fall within the manufacturer's given specifications (usually 0.4 to 2 ohms), the coil is likely faulty.

Tools Required for Repair

For this repair, you'll need the following tools:

Step-by-step Repair Guide

Step 1: Disconnect the Negative Terminal on the Battery

Before starting any repair, it's important to ensure the vehicle is safe to work on. Always disconnect the negative terminal on the battery to prevent accidental electrical discharge. Use a socket wrench to loosen the clamp and remove the terminal.

Step 2: Locating and Removing the Broken Ignition Coil

Locate the ignition coil on your Mustang. This will usually be on the engine block and will be connected to the distributor via a wire. Once located, use a screwdriver to remove the screws holding the ignition coil in place. Carefully disconnect the high-tension lead and the electrical connector at the base of the coil.

Step 3: Installing the New Ignition Coil

Once you've safely removed the old ignition coil, you'll want to install the new coil. To do this, attach the high-tension lead and the electrical connector to the new ignition coil. Make sure these connections are firm, as a poor connection can lead to misfires. After the connections are secured, fasten the new ignition coil to the engine using the screws removed previously.

Step 4: Reconnect the Negative Terminal on the Battery

Once the ignition coil has been successfully installed, you can reconnect the negative battery terminal. Secure the negative terminal clamp onto the battery post and tighten it with a socket wrench.

Potential Pitfalls and Tips

Pitfall: High-Tension lead or electrical connector not properly attached – If these are not properly connected, it can lead to misfires and rough idling.

Tip: Always disconnect the battery when carrying out electrical repairs, and ensure all bolts and connections are sufficiently tightened to prevent future issues.

Safety should always be your number one priority when performing a repair. Wear the appropriate protective equipment and make sure to work in a well-ventilated area. If at any point you are unsure about a step in the process, consult with a professional mechanic.