Spark Plug Tips:  Simply put, yes, the mileage of the bike can be increased a little by changing a small spark plug, but this is not a guarantee. Actually some people do not have proper information about this. However, the reality is that by replacing the old spark plug, the mileage can be changed. 

Here are some things you should pay attention to:

Spark Plug Size: The size of the spark plug is specified by the manufacturer for the engine. An incorrectly sized spark plug can damage the engine and reduce mileage.

Spark Plug Heat Range: The heat range of the spark plug is also important. A spark plug with the wrong heat range will not allow the engine to work properly and can reduce mileage.

Spark Plug Condition: An old, worn or dirty spark plug can prevent the engine from working efficiently and reduce mileage.

If you want to increase the mileage of your bike, then you should do the following things:

Use a spark plug of the size and heat range specified by the manufacturer.

Replace your spark plug regularly, at the intervals recommended by the manufacturer.

Keep your spark plug clean and free of debris.

Have your bike maintained regularly.

It's also important to note that the spark plug is only one of many factors that affect mileage. Other factors include:

Your riding habits

Tire pressure

Condition of the air filter

Type and grade of engine oil

If you want to take steps to increase the mileage of your bike, then starting with Spark Plug is a good option.

But it's important to remember that this isn't a guarantee that you'll see