How Do I Test An Ignition Coil (Simple Test)

Resale Value and the Ignition Coil Test

When I think about selling my chainsaw, one of the first things that comes to mind is its resale value. The condition of the ignition coil plays a huge role here. Seriously, nobody wants to buy a chainsaw that sputters or won’t start at all. Over the years, I’ve learned that knowing how to test an ignition coil is not just useful—it’s essential for preserving the value of the equipment.

Prerequisites and Required Materials

Before I get started, here’s what I make sure to have on hand:

Chainsaw with suspected coil issues
Spark plug tester
Multimeter
Screwdriver set
Safety gloves and goggles
Clean workspace with good lighting

Basic Knowledge Needed:

Familiarity with chainsaw components
Basic understanding of electrical circuits
Comfort with handling tools and equipment

Personal Story: The Day My Chainsaw Let Me Down

Let me tell you about a time when not knowing how to test an ignition coil cost me a pretty penny. I was out in the woods, ready for a day of cutting, when my trusty chainsaw refused to start. It was one of those moments where you’re just standing there, pulling the starter cord, hoping for some miracle. Turns out, it was the ignition coil. If I’d known how to test it back then, I could have saved myself some serious frustration and cash.

Steps to Test an Ignition Coil

1. Initial Safety Measures

I can’t stress enough the importance of safety. Gloves and goggles are my best friends in the workshop. I also make sure the area is clear of distractions and loose objects.

2. Accessing the Ignition Coil

To access the ignition coil, I start by removing the chainsaw’s top cover. This usually requires a screwdriver to loosen some screws. Depending on your model, you might have to remove other parts like the air filter cover or even the starter assembly.

3. Visual Inspection

Once I’ve got a clear view of the ignition coil, I begin with a visual inspection. I’m looking for cracks, burnt spots, or any signs of wear and tear. Once, I found a tiny crack that was almost invisible—those are the sneaky ones that can cause intermittent problems.

4. Setting Up the Spark Plug Tester

Next up is the spark plug tester setup. I remove the spark plug and attach it to the tester. This tool is great because it shows me if there’s a spark when I pull the starter cord. It’s simple but super effective.

5. Testing for Spark

With everything connected, I pull the starter cord while keeping an eye on the tester. A visible spark means the coil is at least doing part of its job. No spark? Time to dig deeper.

6. Using a Multimeter for Detailed Testing

The multimeter is my go-to device for getting into the nitty-gritty details of electrical components.

7. Checking Primary Resistance

I set the multimeter to measure ohms and connect it to the primary terminals of the ignition coil. I’m hoping for a reading between 0.4 and 2 ohms. If it’s off, there’s a problem.

8. Measuring Secondary Resistance

Switching to the secondary terminals, I repeat the measurement process. A proper functioning coil should show readings between 6,000 and 10,000 ohms here.

Detailed Equipment Breakdown

Every tool has its place in my workshop, and here’s why they matter:

Spark Plug Tester: This tool gives me a quick visual cue on whether there’s any spark at all.
Multimeter: For precise measurements that help diagnose subtle issues that aren’t visible to the naked eye.
Screwdriver Set: Different screws require different heads; it saves time having them all available.
Safety Gear: Gloves protect from sharp edges and goggles shield my eyes from unexpected sparks or debris.

Troubleshooting Tips: Beyond Basics

No Spark Detected?

If there’s no spark during testing, I double-check all connections and make sure my tester is working properly. Sometimes swapping out for a new tester or plug can reveal hidden issues.

Inconsistent Readings?

Inconsistent multimeter readings might be due to loose probes or dirty terminals. Wiggling them gently while taking a reading can sometimes help stabilize this.

Common Questions and Concerns

Why Test an Ignition Coil?

It’s not just about keeping your chainsaw running—it’s about efficiency and reliability in your work. A faulty coil can lead to misfires, wasted fuel, and lost time.

What If My Chainsaw Still Won’t Start?

If everything checks out with the coil, other areas like the carburetor or fuel system might need attention. It’s all part of a larger diagnostic puzzle.

Important Reminders and Next Steps

After confirming a faulty ignition coil, replacing it with an OEM part is usually my next step. This ensures compatibility and helps maintain that all-important resale value.

Detailed Procedure for Replacement:

Remove Old Coil: Carefully detach any wires connected to the old coil.
Install New Coil: Make sure it sits properly aligned with flywheel magnets.
Reassemble Parts: Reverse your disassembly steps carefully.

FAQs: Your Burning Questions Answered

Q: How often should I test my ignition coil? A: Annually or whenever performance issues arise is a good rule of thumb.

Q: Can I perform these tests on any chainsaw brand? A: Generally, yes! The principles apply across most brands and models.

Q: Is replacing an ignition coil difficult? A: If you’re comfortable with basic tools and follow your chainsaw’s manual closely, it’s manageable.

By mastering these steps, you not only keep your chainsaw in peak condition but also ensure that when it’s time to sell or upgrade, you get top dollar for your investment. Remembering that initial frustration I faced reminds me why it’s worth learning these skills—it pays off in spades down the line!