Gas cooktop burners normally click while trying to ignite, but they should stop once the flame is lit. If the clicking continues, the issue may be caused by moisture around the ignitor, dirty burner parts, a misaligned burner cap, a damaged spark switch, or an ignition system problem.
This can sometimes happen after cleaning the cooktop or after a spill. If the burners continue clicking after the area is dry and properly assembled, the ignition components should be inspected.
Columbine Appliance & Fireplaces provides professional cooktop diagnostics and repair in Fort Collins, CO, serving homeowners throughout Larimer County.