Car Engine Coil

What is a Car Engine Coil?

A car engine coil is a device that converts the electrical energy from the battery into high-voltage pulses that are used to ignite the spark plugs. The coil is typically located on the side of the engine and is connected to the spark plugs by high-voltage wires.

How Does a Car Engine Coil Work?

The coil consists of two windings: a primary winding and a secondary winding. The primary winding is connected to the battery and the secondary winding is connected to the spark plugs. When current flows through the primary winding, it creates a magnetic field. This magnetic field then collapses, inducing a high-voltage pulse in the secondary winding. This pulse is then used to ignite the spark plugs.

What are the Different Types of Car Engine Coils?

There are two main types of car engine coils: internal coils and external coils.

• Internal coils are located inside the distributor cap. They are typically used in older vehicles.
• External coils are located outside of the distributor cap. They are typically used in newer vehicles.

What are the Symptoms of a Bad Car Engine Coil?

The symptoms of a bad car engine coil can include:

• Engine misfires
• Loss of power
• Rough idle
• Stalling

How to Test a Car Engine Coil

To test a car engine coil, you will need a multimeter. Here are the steps:

1. Disconnect the negative battery terminal.
2. Remove the spark plug wires from the spark plugs.
3. Connect the multimeter to the terminals of the coil.
4. Set the multimeter to the ohms setting.
5. The resistance reading should be between 0.5 and 1.5 ohms.

How to Replace a Car Engine Coil

To replace a car engine coil, you will need the following tools:

• Socket wrench
• Ratchet
• Spark plug socket
• New car engine coil

Here are the steps:

1. Disconnect the negative battery terminal.
2. Remove the spark plug wires from the spark plugs.
3. Unbolt the coil from the engine.
4. Install the new car engine coil.
5. Bolt the coil to the engine.
6. Connect the spark plug wires to the spark plugs.
7. Connect the negative battery terminal.