A gas burner that clicks and clicks but never lights is almost never a gas problem — it is a moisture, debris, or alignment problem, and it is usually fixable in twenty minutes with a paperclip and a toothbrush. The most useful diagnostic is comparing burners: what one burner does that the other three do not tells you immediately whether you are looking at a single dirty burner or a shared electrical fault.
Read this first
- If you smell gas, do not operate any switch, light or phone in the room. Ventilate, leave the building, and call your gas utility from outside.
- Turn off all burner knobs and let the cooktop cool completely before removing caps or grates.
- Do not use a toothpick to clear burner ports — the tip snaps off inside and permanently blocks the port. Use a straightened paperclip or a needle.
- A burner that lights with a large yellow, sooty flame is burning incompletely and producing carbon monoxide. Stop using it and have it serviced.
Step by step
Compare the burners
Turn each burner in turn and note the behaviour. If one burner will not light and the rest are fine, the fault is local to that burner — its cap, ports, or electrode. If every burner clicks continuously even with all knobs off, the problem is shared: a wet or failed spark module, or a switch stuck closed. If nothing sparks anywhere and nothing lights, check that the range is plugged in — a gas cooktop still needs 120 volts for its ignition system.
Confirm gas is reaching the appliance
Try another burner. If any burner lights, gas is present and the supply is fine. If none do, check the shutoff valve behind the range is parallel with the pipe, and confirm other gas appliances in the house still work. As a last check on a stubborn burner, you can hold a lit match to it while turning the knob — if it lights and burns cleanly, gas flow is fine and the fault is purely in the ignition.
Remove and wash the burner cap and head
Lift off the cap and, on sealed burners, the head beneath it. Soak both in hot soapy water and scrub with an old toothbrush, paying attention to the underside of the cap where boil-overs bake on. Rinse and — critically — dry them completely. A cap that is merely damp will stop a burner lighting and is by far the most common reason a burner fails right after someone cleaned the cooktop.
Clear every burner port
Hold the burner head up to the light and look through the ring of small ports around its edge. Any that are blocked with carbonised food will not carry flame, which is what produces a burner that lights on one side and refuses to travel around the ring. Work a straightened paperclip or a sewing needle through each port until it is clear, then blow the debris out. Never use a toothpick.
Clean and inspect the spark electrode
The electrode is the small ceramic-tipped pin sitting beside the burner head. Wipe it clean with a dry cloth or a cloth barely dampened with rubbing alcohol — grease and food residue on the ceramic short the spark to ground so it never jumps to the burner. Check the ceramic for cracks and the metal tip for corrosion or a bent position. It should sit a few millimetres from the burner head, not touching it.
Reassemble with the cap seated correctly
Put the head back on its locating pins and set the cap down squarely — it should sit flat with no rocking, and on most designs there is a notch or a flat that has to line up with the electrode. A cap sitting even slightly proud disperses the gas so it never reaches the spark. This is worth double-checking, because a misaligned cap gives exactly the same symptom as a dead igniter.
Deal with continuous clicking
If a burner clicks endlessly even when it is off, moisture has got into a switch or the spark module — very common after a big boil-over or an aggressive cooktop cleaning. Turn the range off at the breaker for an hour and let it dry out; a hair dryer on low aimed at the cooktop from above helps. If it still clicks after drying, a burner switch has failed closed or the spark module is faulty, and both are replaceable parts.
What this repair costs
Doing it yourself
$0–$60
Hiring a technician
$130–$350
Prices are general estimates for typical US jobs, not quotes. What you actually pay depends on your appliance's brand and age, the part required, your region, and each shop's labour rate. The DIY figure assumes you supply the labour and buy the part yourself.
Parts you may end up buying
| Part | Install | Typical price | Typical lifespan |
|---|---|---|---|
| Bake Element | easy | $15–$40 | 10–15 years |
| Oven Temperature Sensor | easy | $15–$30 | 10+ years |
| Broil Element | easy | $20–$75 | 10–15 years |
| Oven Igniter | moderate | $25–$90 | 5–10 years |
| Surface Burner Igniter | moderate | $20–$95 | 8–15 years |
| Radiant Surface Element | moderate | $25–$100 | 10–15 years |
| Infinite Switch | moderate | $20–$70 | 10–15 years |
| Oven Door Gasket | easy | $20–$80 | 8–15 years |
| Oven Door Hinges | moderate | $30–$120 | 10–15 years |
| Electronic Control Board | moderate | $90–$380 | 10–15 years |
Still not fixed
When to call a pro
Anything upstream of the burner — the gas manifold, the orifices, the flexible connector, or the shutoff valve — is licensed gas work and should not be a DIY project. Call a qualified technician if you need burner orifices changed (for example converting between natural gas and propane), if a burner burns with a persistently yellow or sooty flame after cleaning, or if the range has been moved and you are unsure the connector is sound. If you smell gas at any point, leave and call your gas utility from outside — they will come out for a suspected leak at no charge in most service areas.
More oven & range guides
- Oven Not Heating Evenly — Map the Problem Before You Fix It45–90 minutes plus preheat time
- Oven Not Heating At All — Electric and Gas Diagnosis30–75 minutes
- Oven Door Locked After Self-Clean — How to Release It30 minutes to 3 hours including cooldown
- Electric Burner Not Working — Coil and Smoothtop Diagnosis20–60 minutes
- Oven Door Won't Close Properly — Hinges, Springs and Gasket45–120 minutes
- Oven Broiler Not Working — Electric and Gas Diagnosis30–75 minutes
- Gas Burner Burning Yellow — What the Flame Colour Is Telling You45–90 minutes
- Electric Burner Stays On High — Welded Switch or Stuck Relay45–90 minutes
- Oven Control Panel Not Responding — Keypad, Ribbon or Board45–90 minutes