Once you know the measurement, you can check the gap using a feeler gauge and diagnose if this is the cause of your weed eater not getting a spark. So, if you flip through your service manual, you’ll find the specific gap measurement for your particular weed eater. If this gap is set incorrectly, then you won’t get the spark that you are expecting. Incorrect Coil/Magnet Gapįor the coil to produce the required charge, there needs to be a specific gap between the coil and the magnet on the flywheel. So, all you can really do is take a look inside the connector and check for damage and dirt. If you test the cable through the coil, you could get a false reading because it could actually be a problem at the coil end and not the connector. Usually, the connection between the cable from the coil to the end connector is sealed, so you can’t test just the cable by itself. Sometimes this connection within the spark plug cable can either become damaged or dirty, resulting in a bad connection. The next place to check is the connection between the spark plug and the spark plug cable. Poor Connection Between the Spark Plug & Cable On the other hand, if the new spark plug also doesn’t make a spark, then you’ll have diagnosed that something else in the ignition system is at fault. If a new plug gives off a spark, then you’ll know the old spark plug is at fault. Now there are a bunch of tests you can do to test your spark plug, but the simplest and quickest is to try your weed eater with a new spark plug. For example, the contacts at the end of the spark plug could be sooted up with carbon, the gap could be incorrectly set, or the spark plug could be burned out. A spark plug can fail to make a spark for a number of reasons. One of the first things to check if your weed eater is not getting a spark is the spark plug. Poor Connection Between the Spark Plug & Cable.Here are six things to check to diagnose the root of the problem. If your weed eater is not getting a spark, then you’ll need to take a closer look at the four components responsible for creating the ignition spark. ![]() ![]() 6 Possible Reasons for a Trimmer with No Spark (6 Things to Check) If either one of these components fails, your weed eater will not make a spark. ![]() These include the magnet on the flywheel, the coil, the coil cable and connector, the ON/OFF switch, and finally, the spark plug. 4.1 Replacing the Weed Eater Kill Switch Why Doesn’t My Weed Eater Get a Spark? (The Short Answer)įive main items work together to create the ignition spark needed to fire up your weed eater.
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