Tag: Ignition Coil

How Ignition Coils Work

Primary Circuit: Low voltage from the battery flows through the ignition coil’s primary winding.

Secondary Circuit: When the current is interrupted, a magnetic field collapses, inducing a high voltage in the secondary winding.

Spark Plug Activation: This high voltage is sent to the spark plug, producing a spark that ignites the fuel-air mixture.

Modern vehicles often use one ignition coil per cylinder (coil-on-plug design), which provides more precise ignition and better overall engine performance.

Common Signs of a Failing Ignition Coil

Engine misfires or rough idling

Difficulty starting the engine

Decreased fuel efficiency

Check engine light is on

Loss of power during acceleration

If you notice any of these symptoms, inspecting and replacing faulty ignition coils can prevent further engine damage and restore smooth operation.

Types of Ignition Coils

Conventional Canister Coil: Used in older vehicles with distributor-based systems.

Coil Pack: A group of coils serving multiple spark plugs in distributor-less ignition systems.

Coil-On-Plug (COP): Each spark plug has its own dedicated coil, providing the most direct and efficient ignition.

Choosing the right coil for your vehicle type and engine design is critical for ensuring optimal combustion and power delivery.Ignition coils may not be the flashiest automotive component, but they are absolutely essential to your vehicle’s performance. Regular maintenance and timely replacement can significantly improve engine reliability, fuel efficiency, and power output.

If you’re looking for an ignition coil for a Craftsman lawn mower, here are some key points to consider:

1. Function of the Ignition Coil

The ignition coil is responsible for generating the high voltage needed to create a spark at the spark plug, which ignites the fuel-air mixture in the engine. A faulty ignition coil can cause starting issues, misfiring, or engine stalling.

2. How to Choose the Right Ignition Coil

• Check the Model Number: Find your Craftsman mower’s model and engine number (usually on the engine housing or under the seat).
• Engine Compatibility: Craftsman mowers often use Briggs & Stratton, Kohler, or Tecumseh engines, so ensure the ignition coil matches the engine type.
• OEM vs. Aftermarket: OEM parts ensure direct compatibility, while aftermarket options may be more affordable but should be verified for fit.

3. Signs of a Bad Ignition Coil

✅ Difficulty starting the engine
✅ Engine misfires or runs rough
✅ Loss of power or frequent stalling
✅ No spark at the spark plug

4. Installation Tips

• Disconnect the spark plug wire before working.
• Remove the old coil and ensure the correct air gap (usually 0.010–0.012 inches) when installing the new coil.
• Secure all wiring properly and test the mower before full use.

An ignition coil pack compatible with Briggs & Stratton Intek V-Twin engines is a critical component for ensuring reliable starting and smooth engine performance. The ignition coil generates the spark necessary for igniting the fuel in the engine’s cylinders. If the ignition coil fails, it can lead to engine misfires, rough idling, or even complete failure to start.

Features to Look for in a Compatible Ignition Coil Pack:

1. Compatibility: Ensure the ignition coil is specifically designed for the Briggs & Stratton Intek V-Twin engine. Briggs & Stratton typically has specific part numbers for different engine models, so double-check compatibility with your engine’s model number.
2. Quality: Look for coils made from high-quality materials (such as heat-resistant copper windings) for durability and long-lasting performance.
3. OEM vs Aftermarket: OEM (Original Equipment Manufacturer) parts are generally a safe bet for ensuring perfect compatibility and maintaining warranty conditions. Aftermarket options can be less expensive and may offer a similar level of performance, but it’s important to read reviews or consult with experts about reliability.
4. Easy Installation: Most ignition coil packs are designed for easy installation. Look for models with clear instructions or guides, especially if you plan to install it yourself.
5. Spark Quality: The ignition coil must provide a strong spark for consistent ignition, even in tough conditions (such as cold starts).

The ignition coil for a Briggs & Stratton engine is a critical component responsible for generating the spark needed to ignite the fuel-air mixture in the engine’s combustion chamber. Here are some key points about the ignition coil for Briggs & Stratton engines:

Key Features:

• Compatibility: Ensure the ignition coil is compatible with your specific Briggs & Stratton engine model. The model number of the engine will help you find the correct part.
• Functionality: The coil converts the low voltage from the battery or magneto into the high voltage required to create a spark at the spark plug.
• Installation: Typically, the coil is mounted near the flywheel. Installation usually involves removing the flywheel shroud, disconnecting the old coil, and attaching the new one. The gap between the coil and flywheel must be set correctly for proper operation.

Common Issues:

• Weak or No Spark: A failing coil can cause the engine to produce a weak spark or no spark at all, leading to starting issues.
• Overheating: If the coil overheats, it can lead to misfires or cause the engine to stop running.

Replacement Process:

1. Safety First: Disconnect the spark plug wire and remove the engine cover.
2. Locate and Remove: Find the ignition coil near the flywheel and remove the mounting screws.
3. Install New Coil: Place the new coil in position and set the correct air gap between the flywheel and coil using a feeler gauge (usually 0.010 to 0.014 inches, depending on the model).
4. Reassemble: Reattach the engine cover and connect the spark plug wire.

Purchasing Tips:

• Buy from a reputable dealer or directly from Briggs & Stratton to ensure you get a genuine part.
• Keep your engine’s model and type number handy when purchasing to ensure compatibility.

Ignition coils are essential components in Briggs & Stratton engines, as they are responsible for transforming the low voltage from the battery into the high voltage needed to create a spark in the spark plug. Here’s a guide on selecting, installing, and troubleshooting an ignition coil for Briggs & Stratton engines:

Selecting the Right Ignition Coil

1. Model and Engine Type: Ensure the ignition coil is compatible with your specific Briggs & Stratton engine model and type. Refer to the engine’s manual or specifications to identify the correct part number.
2. OEM vs. Aftermarket: Decide whether you want an original equipment manufacturer (OEM) part or an aftermarket option. OEM parts are guaranteed to fit and perform well, but aftermarket parts can be a cost-effective alternative if chosen carefully.
3. Compatibility: Some ignition coils are designed to fit multiple models. Check the compatibility list provided by the manufacturer to ensure it will work with your engine.

Installing the Ignition Coil

1. Safety First: Ensure the engine is off and disconnect the spark plug wire to prevent accidental starting.
2. Remove the Engine Cover: Use a screwdriver or wrench to remove the screws or bolts holding the engine cover in place.
3. Locate the Ignition Coil: The ignition coil is typically mounted near the flywheel. Identify its location and note how it is connected.
4. Disconnect the Old Coil: Disconnect any wires connected to the old ignition coil and remove the mounting screws or bolts. Carefully take out the old coil.
5. Install the New Coil: Position the new ignition coil in place and secure it with the mounting screws or bolts. Connect the wires to the appropriate terminals on the new coil.
6. Adjust the Air Gap: The air gap between the ignition coil and the flywheel is critical for proper operation. Use a feeler gauge to set the correct gap, typically specified in the engine’s manual (usually around 0.010 to 0.014 inches).
7. Reassemble the Engine: Replace the engine cover and secure it with screws or bolts. Reconnect the spark plug wire.

Troubleshooting Common Issues

1. No Spark: If the engine won’t start and you suspect an ignition coil issue, check for a spark by removing the spark plug, reconnecting it to the spark plug wire, and grounding it against the engine block. Crank the engine and look for a spark. No spark may indicate a faulty coil or a problem with the wiring.
2. Weak Spark: A weak spark can cause poor engine performance. Check the air gap adjustment, as an incorrect gap can result in a weak spark. Also, inspect the spark plug for wear and replace if necessary.
3. Intermittent Spark: If the spark is inconsistent, check the connections to the ignition coil for any loose or corroded wires. Ensure the coil is securely mounted and the air gap is properly set.
4. Engine Misfires: Misfires can be caused by a faulty ignition coil. If replacing the coil doesn’t resolve the issue, inspect other ignition system components, such as the spark plug, spark plug wire, and flywheel magnet.

Conclusion

Proper selection, installation, and maintenance of the ignition coil are crucial for the reliable operation of your Briggs & Stratton engine. Always refer to your engine’s manual for specific instructions and specifications. If you encounter persistent issues, consult with a professional technician for further diagnosis and repair.