One of the burners keeps sparking when its on or off

SOURCE: kitchen gas 4 burner cooktop

i think all igniter switch are grounded,i request to call expert technician to repair it, or uf u want u open the cooktop to see the igniter swicth at konb control area,clean one by one using thinner,remember switc off the plug first.

SOURCE: four burner gas hob

You have to turn the knob a little farther, past the light stage. Sometimes they're not marked quite like they should be.

SOURCE: Kenmore Elite 30" gas cooktop installed. Large right front burner

There are a series of holes in the burner leading down from the main flame area to the pilot tube, ensure the holes are not plugged/restricted.

SOURCE: spark module will not stop after lighting burner

The module might not sense the flame: check electrical connections: wire (and its contacts0 and conections by fryer chasis; to be sure please bond with 18AWG wire pilot burner with spark module green wire.
MarKor

SOURCE: gas igniters on all five burners keep sparking (JennAir CCG556B)

Try cleaning around all the ignitors at each burner. Look for build up of cleansing product and/or food. Sometimes all it takes is a good cleaning and removal of a buildup to solve this. Worth trying before replacing a bunch of parts!
K