Not being facetious here... change the spark plug as a first step. They require regular replacement. If that doesn't work, use a multimeter to check that the spark plug wire is actually releasing electrical pulses. If it isn't, you'll need to keep moving further up the line to the coil.
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Not being facetious here... change the spark plug as a first step. They require regular replacement. If that doesn't work, use a multimeter to check that the spark plug wire is actually releasing electrical pulses. If it isn't, you'll need to keep moving further up the line to the coil.