How to Change Moped Spark Plugs


Mopeds are becoming quickly popular as a cheaper mode of transportation, especially with the rising gas costs. Mopeds need to be maintained and updated, just as you would a car or truck. Spark plugs are a key component to the function of the moped's engine and should be changed when they burn out.

  • Get familiar with your moped engine and its components. This should include the battery, spark plugs, head gaskets and other components. If you understand the basic function of your moped engine, it will be easier to diagnose when there is a problem.

  • Understand how to "read" your spark plug to learn how hot your moped engine is running. This is important because if your engine is running too hot it can seize the piston and too cool means you are not getting an adequate supply of power running throughout the engine. "Read" the spark plug by fully warming up the engine, then looking at the ceramic insulator inside the plug to see what color it is. It should be light brown or tan. Too light means the engine is running too hot. Too dark or wet-looking means the carburetor is too big.

  • Locate your moped spark plug on the top of your cylinder. Using a 13/16th-inch wrench, loosen the spark plug by placing the wrench around the top of the spark plug and wiggling it slightly. This will allow you to remove the spark plug by hand.

  • Inspect the new spark plug to check for any damage. Install it by placing the spark plug in the empty socket the old one came out of. It should pop right into place. You can use the wrench to pop it into place if you are uncomfortable doing it with your hand.

Promoted By Zergnet


You May Also Like

  • How to Fix Moped Spark Plugs

    Make adjustments to moped spark plugs. Learn about moped maintenance in this free video.

  • About Moped Spark Plugs

    About Moped Spark Plugs. Part of the series: How to Fix a Moped. What do spark plugs do? ... How to Change...

  • How to Repair a Yamaha Scooter

    Inspect the spark plug, located inside the engine's cylinder underneath the panel facing the scooter's ... How Do I Change the Spark...

  • How to Troubleshoot a Tomos Moped

    No matter how old your moped is, a fouled spark plug will make your engine stop running. They are inexpensive to replace...

  • How to Change Spark Plugs

    How to Change Moped Spark Plugs. Mopeds are becoming quickly popular as a cheaper mode of transportation, especially with the rising gas...

  • Baja Scooter Sc50-2 Troubleshooting

    Use a spark plug wrench to remove your Baja scooter's spark plug. Located in Tempe, Arizona, Baja Motorsports produces a broad range...

  • How to Service a Yamaha Majesty

    Use only an NGK CR7E spark plug in the scooter to avoid serious engine damage. Related Searches. References. ACDelco: Vehicle Maintenance and...

  • My 49 cc Moped Won't Start

    My 49 cc Moped Won't Start. ... How to Install a Drive Belt on a 50 CC Moped; How to Change the...

  • How to Tune a 50CC Scooter

    Disconnect the ignition cap on the spark plug in the engine cylinder. Use your socket wrench to loosen and remove the stock...

  • How do I Troubleshoot a Wildfire WF50-S2 Scooter?

    How Do I Change the Spark Plug on a Piaggio Fly 150cc Scooter? The stylish Piaggio Fly 150cc marries a single-cylinder, ......

Related Searches

Read Article

How to Clean Your Car Headlights

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!