Stove Burner Won't Light? How to Fix a Gas Range Igniter

A gas range burner that clicks but won't light is one of the most common stove service calls — and one of the most frequently self-fixable. Before you call anyone, work through this sequence.

Understanding How Gas Burner Ignition Works

Each burner on a gas range has two components responsible for ignition: the igniter (a ceramic spark electrode) and the burner cap (a solid disc that sits on top of the burner). Gas flows out through small ports around the burner, the igniter creates a spark, and the burner lights. When the system fails, it's almost always one of these components.

Problem 1: Wet or Dirty Igniter (Most Common)

This is the reason 60 percent of "won't light" calls have simple fixes. Spills, boilovers, and even steam from a pot can get into the igniter area, temporarily or partially shorting out the spark. The igniter clicks but the spark is too weak or too diffused to ignite the gas.

The fix: Clean the igniter. Take the burner cap and burner head off the burner (they just lift). Under the head you'll see the ceramic igniter tip — a small white or off-white cylinder. Clean it with a dry toothbrush or a Q-tip dipped in rubbing alcohol. Let it dry completely before testing.

Also clean the burner cap and the burner head ports with a toothpick or needle to make sure the gas flow holes aren't blocked. A clogged port can prevent gas from reaching the spark, especially if the clog is on the side near the igniter.

After cleaning, try lighting the burner. If it sparks and lights, you're done.

Problem 2: Burner Cap Is Misaligned

After cleaning the stovetop or removing the burner components, it's very easy to put the burner cap back in the wrong position. The cap has a flat side or a specific orientation and if it's even slightly off, gas distribution is uneven and the burner won't light reliably.

The fix: Lift off the burner cap, look at it, and seat it back down carefully so it sits flat and level. The cap should sit directly on top of the burner head without wobbling. If there's a flat side or an alignment notch, make sure it's oriented correctly.

This is one of the most common "I can't figure out what's wrong" situations — and the solution takes 10 seconds.

Problem 3: Failed Igniter Module

If the burner is clean, the cap is seated correctly, and the igniter still won't spark at all — or sparks weakly even when completely dry — the igniter itself has likely failed.

Each burner on most modern gas ranges connects to a module called the spark module (or spark ignition switch) that generates the voltage for the spark. When you press the knob in to ignite, the spark module fires all the igniters simultaneously — that's why all burners click when you try to light one.

If only one burner doesn't spark: that burner's igniter electrode has failed. Replacement igniters are burner-specific but generally inexpensive ($15 to $40) and require removing the stovetop to access the wiring underneath. A moderately handy homeowner can do this.

If none of the burners spark: the spark module has failed. Modules are $30 to $80 for most brands and are located under the cooktop. Replacement is a moderate DIY job — unplug the range, remove the cooktop, disconnect the old module, install the new one.

If some burners spark but not others in a consistent pattern: check the wiring connecting the non-sparking igniters to the module. Wires can burn through or come loose over time.

Safety Reminder

If you smell gas at any point during this troubleshooting, stop immediately. Don't try to light the burner manually, don't operate any electrical switches in the kitchen, and don't use your phone near the stove. Leave the house, open doors and windows as you go, and call your gas company's emergency line from outside. A gas smell with a burner that won't light means gas is flowing but not igniting — that's a safety emergency, not a repair call.

When the Burner Lights But Won't Stay Lit

If the burner lights but goes out when you release the knob, the thermocouple (on older ranges) or the flame sensor is not detecting the flame properly. This is a different failure from ignition problems and typically requires a technician.

At Appliance Fix VA we work on every major brand of gas range and cooktop in Arlington. If you've worked through the above without success, call (571) 463-8890 and we'll get it diagnosed.