A stovetop burner that will not light is most often a cleaning issue, not a gas-supply fault.
Clean the Igniter and Ports
Spilled food and moisture block the spark and the gas ports.
Fix: Clean the igniter and clear each burner port with a pin once it is cool and dry.
Seat the Burner Cap Correctly
A cap knocked out of position misaligns the flame ports.
Fix: Reseat the cap squarely over the base.
Replace a Failed Igniter
No clicking at all on one burner often means a dead spark igniter.
Fix: A technician can replace the igniter module.
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