Is your lawn mower struggling to start or running poorly? You might be dealing with a bad ignition coil. This small but crucial part plays a big role in generating the spark that keeps your mower running smoothly. When it fails, you’ll notice a drop in performance that can turn your weekend lawn care into a frustrating chore.
Key Takeaways
- Symptoms of a Bad Coil: Key signs include difficulty starting, irregular engine performance, and poor fuel economy, which can indicate an ignition coil issue.
- Testing Methods: Utilize visual inspections and a multimeter to check the coil’s resistance and ensure it functions within acceptable ranges.
- Causes of Coil Failure: Common reasons for coil failure include age and wear, as well as environmental factors like moisture and extreme temperatures.
- Replacement Options: Choose between OEM coils, which offer guaranteed compatibility, and aftermarket coils that may present cost savings but vary in quality.
- Cost Considerations: OEM coils typically range from $30 to $100, while aftermarket options can cost between $15 and $60, influencing your budget decisions.
Symptoms of a Bad Lawn Mower Coil
Recognizing the symptoms of a failing lawn mower coil helps in identifying issues early. Here are some noticeable signs to look for.
Difficulty Starting the Mower
You might experience trouble starting the mower. If the engine cranks but won’t start, the ignition coil could be defective. Additionally, repeated attempts with no success indicate potential failure. If you’ve charged the battery and ensured fuel flow, check the coil.
Irregular Engine Performance
Watch for irregular engine performance. If the mower stutters, stalls, or runs unevenly during operation, these issues often stem from a bad coil. For instance, the engine might lose power while cutting grass or idle inconsistently. Inconsistent sparking from a failing coil disrupts the combustion process.
Poor Fuel Economy
You could notice a decline in fuel economy. A malfunctioning ignition coil can cause excessive fuel consumption as the engine struggles to run efficiently. You might find yourself refueling more often than expected. If mowing the lawn uses more gas than usual, consider testing the coil as a probable cause.
Testing the Lawn Mower Coil
Testing the lawn mower coil is crucial for diagnosing ignition issues. Follow these methods to determine whether the coil is in good condition.
Visual Inspection Techniques
Start with a visual inspection of the coil. Look for signs of physical damage, such as cracks, burns, or corrosion. Check the wires connected to the coil for fraying, loose connections, or broken insulation. If there are any obvious defects, replacing the coil is necessary.
Next, examine the mounting area. Ensure that the coil is securely attached, as vibrations can loosen it over time. A loose coil may result in an unreliable spark, leading to starting problems.
Using a Multimeter for Testing
Using a multimeter provides a precise way to test the lawn mower coil. Set your multimeter to the ohms setting. Disconnect the spark plug and the wires connected to the coil.
Measure the resistance between the terminal and the ground. For most mowers, this should range between 3 to 5 ohms. If the reading is significantly higher or lower, the coil is faulty.
After that, check the coil’s secondary resistance by measuring between the spark plug terminal and the ground. This reading should typically fall between 6,000 to 15,000 ohms. Exceeding this range often indicates a bad coil.
By employing these techniques, you can accurately assess the condition of your lawn mower’s ignition coil and take appropriate action.
Common Causes of Coil Failure
Understanding the common causes of coil failure helps you diagnose ignition issues effectively.
Age and Wear
Age contributes significantly to coil failure. Over time, electrical components deteriorate. Worn-out insulation can lead to shorts. You might notice decreased performance as the coil struggles to generate a spark. Regularly replacing old parts can prevent unexpected breakdowns.
Environmental Factors
Environmental conditions often impact coil longevity. Exposure to moisture, dirt, and extreme temperatures can cause corrosion and damage. You should protect your mower from the elements as much as possible. Store it in a dry place and cover it during inclement weather. Regular cleaning reduces debris buildup and extends the coil’s lifespan.
Replacement Options for Lawn Mower Coils
When it comes to replacing a bad lawn mower coil, you have two main options: OEM (Original Equipment Manufacturer) coils and aftermarket coils.
OEM vs Aftermarket Coils
- OEM Coils are made by the same manufacturer that produced your mower. They often guarantee a perfect fit and compatibility with your specific model. While typically more expensive, they come with a warranty and reliable performance.
- Aftermarket Coils are produced by third-party manufacturers. They may offer a wider range of prices and can be cheaper than OEM options. However, quality varies. Some aftermarket coils may not match OEM performance, so reading reviews and checking compatibility is crucial.
Both options work, so consider your budget and performance needs when making a choice.
- OEM Coil Prices generally range from $30 to $100, depending on the mower brand and model. Additional costs may include shipping fees if purchased online.
- Aftermarket Coils can range between $15 and $60. While they might save you money upfront, evaluate their quality and compatibility with your mower to avoid further issues later.
Keep an eye out for local deals or discounts on mower parts to help offset costs. Investing in a quality coil, regardless of type, ensures reliable performance and longevity.
Conclusion
Recognizing the signs of a bad lawn mower coil can save you time and frustration. By staying attentive to starting issues and performance problems you can address these concerns before they escalate. Regular maintenance and inspections will help prolong the life of your coil and keep your mower running smoothly.
When it’s time for a replacement remember to weigh your options carefully. Whether you choose an OEM or aftermarket coil make sure it fits your needs and budget. A little diligence now can lead to a healthier mower and a more enjoyable lawn care experience. Happy mowing!
Frequently Asked Questions
What is the role of the ignition coil in a lawn mower?
The ignition coil transforms low battery voltage into high voltage to ignite the fuel-air mixture in the engine. This process is crucial for starting the mower and maintaining engine performance.
How can I tell if my lawn mower coil is failing?
Key signs of a failing ignition coil include difficulty starting the mower, irregular engine performance like stalling, and poor fuel economy. If the engine cranks but won’t start, it’s a good idea to check the ignition coil.
What should I inspect when testing my lawn mower coil?
Start with a visual inspection. Look for physical damage, such as cracks or corrosion, and check for frayed or loose wires. Ensure that the coil is securely mounted as well to prevent starting issues.
How do I test the resistance of a lawn mower coil?
Use a multimeter to measure the coil’s resistance. Check both primary and secondary ohm ranges according to your mower model’s specifications. This will help you determine if the coil is functioning correctly.
What causes ignition coil failure in lawn mowers?
Common causes include age and wear from regular use, environmental exposure to moisture and dirt, and potential shorts from damaged insulation. Regular maintenance can help improve coil longevity.
Should I choose an OEM or aftermarket ignition coil?
OEM coils guarantee a perfect fit and reliable performance but tend to be pricier. Aftermarket coils are cheaper but may vary in quality. Assess your budget and performance needs when making a choice.
How much do lawn mower ignition coils typically cost?
OEM ignition coils usually range from $30 to $100, while aftermarket options can cost between $15 and $60. Compare prices and read reviews to find a suitable replacement that meets your needs.
How can I extend the lifespan of my lawn mower coil?
To extend your lawn mower coil’s lifespan, store it in a dry place, protect it from extreme elements, and keep it clean to minimize debris buildup. Regular inspections will help prevent failures.
