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Don't Junk It! How to Revive Your Faulty Chainsaw Coil with Heat
Ever reach for your trusty chainsaw, ready to tackle a yard project, only to be met with a frustrating sputter and no spark? A dead chainsaw can put a real damper on your outdoor plans, and replacing the ignition coil can be a costly solution.
But before you toss your saw in the scrap pile, there's a surprising trick you might not know about: heat can bring some faulty coils back to life!
This might sound strange, but it applies specifically to a type of coil known as the Wico/Prestolite electronic ignition coil. These coils were notorious for being temperamental, sparking one day and leaving you stranded the next. The culprit? Moisture!
The Magic of Baking Out the Moisture
My theory is that over time, moisture can sneak into the coil, particularly around the lamination legs. This moisture can then condense and cause a short circuit, effectively killing the spark. The good news? By baking the coil at a low temperature, you can often drive out that moisture and restore its functionality.
Think of it like reviving a damp electrical component. Here's how to do it yourself:
Bringing Your Dead Coil Back to Life: A Step-by-Step Guide
What you'll need:
- Faulty Wico/Prestolite electronic ignition coil
- Toaster oven
- Oven mitt
- Baking sheet (optional)
Instructions:
- Preheat your toaster oven to 200°F (93°C).
- Place the coil directly on the oven rack (or on a baking sheet for extra safety).
- Bake the coil for 12-16 hours.
- Once the baking time is complete, turn off the oven and let the coil cool completely before handling it.
Important Safety Note: Always be cautious when working with electrical components. If you're uncomfortable with this process, consult a qualified small engine repair technician.
The Benefits of Baking Your Coil
The beauty of this method lies in its simplicity and cost-effectiveness. Replacing a Wico/Prestolite coil can set you back a hefty $200 or more. In the case of the Super XL & XL-12 coils, aftermarket replacements might not even be readily available. Baking your old coil offers a second chance at life for your chainsaw, saving you significant time and money.
Is Baking a Universal Fix?
While baking can work wonders for Wico/Prestolite coils, it's not a guaranteed solution for all ignition coil problems. If your chainsaw has a different type of coil or the damage is more severe, baking might not be effective. In such cases, you might need to consider replacing the ignition module or consulting a professional for further diagnosis.
So, the next time your chainsaw sputters and dies, don't despair! Give the baking method a try. It might just be the spark you need to get your saw back up and running.
Have you ever tried baking a faulty coil? Share your experiences and any tips in the comments below!