Attach the spark plug to a spark plug tester, then connect the tester to the ignition wire. Start the engine and observe the ...

Every small gasoline engine has a spark plug, and this key component requires periodic inspection and testing. Learn how to do it here.

A. No, the spark plug and ignition coil are two separate parts. The ignition coil feeds the spark plug high voltage. Q. Yeah, But How Much Does It Cost To Replace an Ignition Coil?