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Problem guide

Why won't my gas burner light?

Updated · Sources listed at the end

Short answer

Most often the burner is wet, the ports are clogged after a spill, or the cap is misaligned so the spark can't reach the gas. Let it dry completely, seat the cap, and clean the ports with a soft brush. If it still won't light — or you smell gas — stop and call a professional.

Gas cooktop burner with an even blue flame ring

Gas safety

Act now

  • Strong gas smell: leave immediately and call your gas utility or 911 from outside.
  • Don't keep clicking an unlit burner with gas flowing.

Possible causes, in the order they're usually ruled out

Gas stove burner not lighting
  1. Burner capMisaligned or wetYou can check
  2. Burner portsClogged after a spillYou can check
  3. Electrode & switchWeak or no spark on one burnerTechnician
  4. Spark moduleNo spark on any burnerTechnician
  5. Gas supply & valveGas not reaching the burnerTechnician
A symptom points to possible causes. Only testing confirms one.

Safe checks

  1. Turn the burner off and let it cool.
  2. Dry it thoroughly — wait several hours after a spill or cleaning.
  3. Seat the burner cap so it's flat and centered.
  4. Clean ports with a soft brush, not a toothpick.
  5. Check whether other burners spark: if none do, the range may not have power.

How a gas burner lights

  1. 1Knob + valveReleases gas to one burnerTechnician
  2. 2Spark moduleSends pulses to every igniterTechnician
  3. 3IgniterKeep dry and free of food residueYou can check
  4. 4Burner cap + headMust sit flat and alignedYou can check
  5. 5FlameSteady and mostly blue
Turning the knob opens the gas valve and fires the spark module; every igniter on the cooktop clicks, but only the burner with gas lights. Wet or misaligned burner caps are the usual reason one burner clicks without lighting. Valves, orifices, and gas lines are for a qualified technician only.

Possible causes after that

CluePossible cause
No spark on any burnerPower, spark module
No spark on one burnerElectrode, wire, or switch
Spark but no flameClogged ports or orifice, gas supply
Constant clickingMoisture or a failing switch

Gas cooktop burner

Gloved hand wiping a white gas cooktop with spill stains and burnt spots around two burners
Before
Before: Spills and burnt residue around the burner ports.
Gas cooktop burner with an even blue flame ring
After
After: Clean, dry burner: a steady, mostly blue flame.

Example photos of the condition — different appliances, not RepairHearth jobs. Photos: Liliana Drew (Pexels) · Mark Owen Wilkinson Hughes (Unsplash).

Gas burner won't light: safe checks

Leave to a professional

Leave this to a professional

  • Spark module, electrodes, and switches
  • Burner orifices, valves, and anything on the gas supply

Repair or replace?

A burner that won't light is a small repair. Consider replacement only if the range has several other problems, such as a failing oven, cracked cooktop, or controls with discontinued parts.

How it's diagnosed

A technician checks whether the electrode sparks strongly and at the right spot, whether the burner ports and orifice are clear, and whether the spark module and switches work. Weak spark on all burners points to the module; on one burner, to that electrode, its wire, or switch.

Cost outlook

Electrodes and switches are inexpensive parts; a spark module is moderate. Gas valve problems cost more. None of these usually justifies replacing a range on their own.

What to request

A symptom points to likely causes; only testing confirms one. If the checks above don't solve it, request a diagnosis for stove & range repair and mention what you've already checked.

Common questions

Why does my stove keep clicking after the burner lights?

Often moisture or a misaligned cap. If it continues after drying, a switch may be failing.

Need stove & range repair? Call now

Pricing, timing, and appointments are confirmed by the repair provider.

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