The ATV will not create a spark when the kill switch is off. Now that you have verified there is no spark it’s time to begin the actual troubleshooting. If the spark is weak, the spark inside the tool will appear with yellow-red and a more inconsistent spark pattern. If the spark is good, it will have a regular purple-blue color. If there is a spark, it will appear inside the see-through tool casing, jumping between the tho metal leads. The tool has an alligator clip that connects to ground, such as the engine or an exposed metal part of the frame. Remove the spark plug boot from the spark plug and connect it to the tool.
The second style of tester connects where the spark plug normally would be. The bulb inside the tool will flash to indicate a spark and how powerful and consistent it is. With the first spark plug tester style, you place the tool’s grooved part over the spark plug wire while the engine is running. On a healthy spark plug, you should see a bright blue spark that fires continuously.Īlternatively, you can test the spark plug by using a cheap spark plug tester. Spark plug testers come in various styles, but here are two of the most common. Make sure to keep your hands at a safe distance from the spark plug. You may need a helper to push the starter for you. Crank the engine and watch for a spark.This will ground the spark plug so that it can create a spark. The plug’s metal part must touch the metal on the engine or frame for this to work. Place the spark plug on the cylinder head or near an exposed metal part of the frame.Push the spark plug into the spark plug boot by hand until it is seated. Connect the spark plug with the ignition coil lead.Spark plugs sockets are either 5/8 inches (16mm) or 13/16 (21mm) inches. Remove the spark plug from the engine.Remove the ignition coil lead boot from the spark plug.It’s a good idea to close the fuel tank petcock valve as a safety precaution if your bike has one or to remove the fuel pump fuse before checking the spark. If you are not sure whether your bike not starting is caused by a lack of spark, or something else, we recommend you read this guide. Therefore it’s not enough to assume the spark is not there you need to test it.Īn ATV needs fuel, air, and spark to start and. While you may feel confident that a lack of spark is the issue, keep in mind that other starting issues could be causing similar symptoms. You may or may not already have done this step, but you need to verify that the ATV actually has no spark before you continue troubleshooting. Confirm that the ATV actually has no spark Troubleshooting-guide for an ATV with no spark 1. Before you’ve established which part is acting up, there is no need to focus on one single component. More often than not, you will find that there is a problem with the spark plug, the kill switch, a wire, or a connector.īy performing various tests, you should be able to pinpoint which component is faulty. If you assume the worst and you begin by removing the stator, you may end up having to reassemble a bunch of components you didn’t have to take apart. With electrical issues, it is always better to check the most straightforward stuff first. The easiest way of identifying which of the listed components is failing is through a process of elimination. Wiring and connectors connecting these componentsīasic layout of an ATV ignition system.When your ATV is not getting a spark, the problem is with one or more of these electrical components: They all have to function correctly, or there will be no spark or the spark will become weak. Each component in the system is just as important as the other. Your bike’s ignition system consists of various components that work together to create a spark. What causes no-spark or a weak spark on an ATV?
How to test the ignition coil using a multimeter.Check the kill switch and other safety switches Check for damaged wires in the wiring harness Check for loose, damaged, or corroded connectors Make sure the battery is charged and has good ground Troubleshooting-guide for an ATV with no spark.
How do you diagnose no spark on an ATV?.What causes no-spark or a weak spark on an ATV?.