Search guides

Fix a stove burner that will not stay lit

We'll confirm the symptom, clean clogged ports, then isolate the cause—thermocouple and pilot on standing-pilot stoves, or igniter and gas valve on electronic ignition—or tell you when to call a pro.

Troubleshooting · Home appliances
10–30 min
What you'll need
  • Pin or paper clip (for cleaning ports)
  • Soft cloth
  • Replacement thermocouple (if tests show a fault; match part number)
Step 1 of 11

Quick triage — pick your path

Get started

Choose the option that matches what you see. You can jump straight to that section.

Show full guide

Steps

Goal: Confirm the symptom, rule out gas smell, clean ports, then isolate the cause—thermocouple on standing-pilot stoves or igniter/valve on electronic ignition.

  • Turn the burner knob to light. Hold it (or let it auto-ignite). If the flame appears but goes out when you release the knob or within a few seconds, the burner will not stay lit.
  • Good: Flame appears but dies when you release—symptom confirmed. Proceed to Clean burner ports.
  • Bad: Burner does not light at all—different problem. See When to get help.

Clean burner ports

Goal: Clear clogged ports and reseat the burner cap so the flame can stay lit.

  • Lift the burner cap and base. Use a pin or paper clip to clear any clogged burner ports. Wipe away food residue and grease.
  • Confirm the cap and base are dry and seated correctly. A clogged port or loose cap can cause the flame to go out.
  • Turn the burner on again and test. You should see clear holes and a steady flame.
  • Good: Ports clear, cap seated. Proceed to Thermocouple path or Electronic path based on your stove type.
  • Bad: Still goes out—proceed to the appropriate path based on stove type.

Thermocouple path

Goal: Check and fix the thermocouple and pilot flame on standing-pilot stoves.

  • Look under the cooktop or lift a burner. A standing pilot is a small blue flame that burns constantly. The thermocouple is a thin metal rod next to it.
  • The thermocouple must sit in the pilot flame tip. If bent away or dirty, it will not heat and the gas valve will close. Gently bend it toward the flame. Clean it with a soft cloth.
  • Confirm the pilot flame is strong and blue, not yellow or weak. You should see the thermocouple tip in the flame.
  • Turn the burner on again. Hold the knob for 30–60 seconds. Release. If it stays lit, the fix worked.
  • If it still goes out, shut off the gas at the valve behind the stove. Disconnect the thermocouple and replace with an exact match (match the part number). Restore gas and test.
  • Good: Burner stays lit when you release the knob.
  • Bad: Still goes out after cleaning and replacement—call a technician.

Electronic path

Goal: Test electronic ignition stoves; escalate to a pro if cleaning does not fix it.

  • After cleaning ports and reseating the cap, turn the knob and hold for 30–60 seconds. Some models need a longer hold to establish the flame.
  • Release the knob. If the burner stays lit, the fix worked.
  • If the burner still goes out, the igniter or gas valve may be faulty. Check your owner’s manual for model-specific hold times. Gas valve work requires a professional.
  • Good: Burner stays lit.
  • Bad: Still goes out—call a technician for igniter or gas valve repair.

When to get help

If you smell gas, evacuate immediately. Do not turn on lights or appliances. Call 911 or your gas utility from outside. Do not call a technician for an active gas leak—that is an emergency.

Call an appliance technician if:

  • The burner does not light at all (different problem—ignition or gas supply).
  • Cleaning and thermocouple replacement did not fix it.
  • The pilot will not stay lit.
  • You have electronic ignition and the burner still goes out after cleaning.
  • You are not comfortable working with gas.

Verification

  • The burner lights when you turn the knob and stays lit when you release it.
  • No gas smell. Pilot flame (if present) is strong and blue.
  • Burner ports are clear and the cap is seated correctly.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Verify the burner lights but goes out when you release the knob or shortly after.
  2. Clean ports and cap Clear clogged burner ports and reseat the burner cap.
  3. Standing pilot — thermocouple Check thermocouple position and pilot flame; replace thermocouple if faulty.
  4. Electronic ignition Clean burner, hold knob longer; if still fails, call a technician for igniter or valve.
  5. Call a pro Gas smell—evacuate, call 911 or gas utility from outside. Repeated failures or gas valve—call an appliance technician.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Stove type (standing pilot or electronic ignition)
  • Whether the burner lights at all
  • Whether ports were clogged
  • Thermocouple position and pilot flame appearance
  • Steps already tried

Does the burner light but go out when you release the knob or shortly after?

Turn the burner knob to light. Hold it (or let it auto-ignite). If the flame appears but dies when you release or within a few seconds, the burner will not stay lit.

Turn the burner knob and light it. Good: flame appears but goes out when you release—symptom confirmed. Bad: burner does not light at all—different problem (ignition or gas supply); call a technician.

Yes No

You can change your answer later.

Do you smell gas?

Gas smell indicates a leak. Evacuate immediately.

If you smell gas, do not turn on lights or appliances. Evacuate immediately. Call 911 or your gas utility from outside. Good: no gas smell—proceed. Bad: gas smell—evacuate, call 911 or gas utility from outside.

Yes No

You can change your answer later.

Are the burner ports clean and the cap seated?

Clogged ports or a loose cap can cause the flame to go out.

Lift the burner cap and base. Use a pin or paper clip to clear clogged burner ports. Wipe away food residue. Confirm the cap is dry and seated correctly. Turn the burner on again and test. Good: ports clear, cap seated—proceed to pilot type. Bad: still goes out—proceed to pilot type anyway.
Question

Are the ports clean and the cap seated?

Continue

You can change your answer later.

Does the stove have a standing pilot or electronic ignition?

Standing pilot: small blue flame burns constantly. Electronic: no pilot; you hear a click and the burner lights via spark.

Look under the cooktop or lift a burner. Standing pilot: small blue flame always on. Electronic ignition: no pilot; click when you turn the knob. Good: you know the type. Bad: unsure—call a technician.

Standing pilot Electronic

You can change your answer later.

Is the thermocouple in the pilot flame and is the pilot strong?

The thermocouple must sit in the pilot flame tip. A weak or yellow pilot can cause the burner to go out.

Check the thermocouple—thin metal rod next to the pilot. It must sit in the flame tip. Gently bend it toward the flame if needed. Clean it. Confirm the pilot is strong and blue. In flame and strong: proceed to test. Not in flame or weak: adjust and clean, then test.

Yes No

You can change your answer later.

Adjust thermocouple and pilot, then test

Bend the thermocouple toward the pilot flame. Clean it. Confirm the pilot is strong and blue. Turn the burner on again and hold the knob for 30–60 seconds. Release. If it stays lit, the fix worked. If not, replace the thermocouple or call a technician.

Done

Does the burner stay lit after holding the knob 30–60 seconds?

Some stoves need a longer hold for the thermocouple to heat.

Turn the burner on again. Hold the knob for 30–60 seconds. Release. Stays lit: fix complete. Goes out: thermocouple may have failed—replace it or call a technician.

Yes No

You can change your answer later.

Replace thermocouple and test

Shut off the gas at the valve behind the stove. Disconnect the thermocouple and replace with an exact match (match the part number). Restore gas and test. If it still goes out, call a technician.

Done

Burner stays lit

The fix worked. The burner should stay lit when you release the knob.

Done

Does the burner stay lit after holding the knob 30–60 seconds?

Electronic ignition models may need a longer hold to establish the flame.

Turn the burner on again. Hold the knob for 30–60 seconds. Release. Stays lit: fix complete. Goes out: igniter or gas valve may be faulty—call a technician. Gas valve work requires a pro.

Yes No

You can change your answer later.

Call a technician

If you smell gas, evacuate immediately. Do not turn on lights or appliances. Call 911 or your gas utility from outside. Call an appliance technician if: the burner does not light at all; cleaning and thermocouple replacement did not fix it; the pilot will not stay lit; or you have electronic ignition and the burner still goes out. Gas valve repairs always need a pro.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a gas stove burner light but not stay lit?
Clogged burner ports, a dirty or misaligned burner cap, or a faulty thermocouple (standing-pilot models). The thermocouple senses the pilot flame and keeps the gas valve open; if it does not heat properly, the valve closes when you release the knob. On electronic ignition, a bad igniter or gas valve can cause the flame to go out.
Can I fix a stove burner that will not stay lit myself?
Yes. You can clean burner ports, reseat the burner cap, and on standing-pilot models adjust or replace the thermocouple. Gas valve repairs require a professional. Never work on gas lines yourself.
When should I call a technician for a stove burner that will not stay lit?
If you smell gas, evacuate and call 911 or your gas utility from outside. Call an appliance technician if cleaning and thermocouple replacement do not fix it, if the pilot will not stay lit, or if you have electronic ignition and the burner still goes out after cleaning.

Rate this guide

Was this helpful?

Continue to