Spark Checker Battery Checker RocwooD Included AAA Battery Test Car Batteries and Small Machine Spark Included Diagnostic Tag

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- Yellow - If it can also flash yellow which means the spark voltage is to high. This can mean you have a broken spark plug or a plug wire is not connected properly. (The spark checker may also flashes yellow if it is on the wrong engine type so you may need to change the switch on the side).
- Constant Red - Finally if is a constant red it means there is no voltage.
- Included - Furthermore it comes with an AAA battery and handy diagnostic tag to attatch to the spark checker.
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