Fix a Gas Stove Burner That Won't Ignite

Gas stove igniters fail for straightforward reasons, and most of them you can fix in under an hour without calling anyone. The igniter—that little electrode that clicks and sparks—either isn't sparking, or the spark isn't reaching the gas properly. The gas itself is fine. The stove works. But one burner just sits there when you turn the knob, completely silent and dark. This guide walks you through the diagnosis: figuring out whether you're looking at a clogged burner, a wet or corroded igniter, a broken spark module, or a control valve that's stuck. You'll test each part systematically, and in most cases, you'll fix it yourself with nothing but a screwdriver and a cleaning tool.

1. Listen for the telling click. Turn the burner knob to high. Listen closely for a rapid clicking sound coming from the burner area. If you hear clicking, the spark module is working and the igniter electrode is getting power. If you hear nothing—total silence—skip ahead to testing the spark module. If you hear clicking but see no spark or flame, proceed to inspect the igniter electrode.
2. Remove grates and cap safely. Turn off the burner and wait two minutes for any residual heat to dissipate. Lift off the metal grate covering that burner. Most grates rest in place without fastening. Next, locate the burner cap—the metal ring with holes around the igniter electrode in the center. Lift it straight up. It may feel stuck; twist gently side-to-side as you pull if needed.
3. Clear clogged gas ports. Look at the holes around the base of the burner cap—these are the gas ports. They often clog with spilled food, grease residue, or mineral buildup. Use a straightened paper clip, a toothpick, or a needle to gently clear each port. Push straight in and wiggle slightly; don't force it or you'll damage the port. Wipe away any debris with a dry cloth. If ports are blocked, this is likely your problem.
4. Check for corrosion damage. Look at the small electrode—a thin metal rod—sticking up through the center of the burner cap. It should be smooth and shiny. If it's corroded white or brown, pitted, or visibly cracked, it needs replacement. If it looks intact, use a dry cloth to wipe off any moisture or burnt residue. Even a light coating of moisture can prevent spark.
5. Eliminate moisture completely. If the igniter is damp from spilled liquid or steam, moisture is blocking the spark. Use a clean, dry cloth or paper towel to wipe the entire electrode and the ceramic base it sits in. If the burner cap itself is wet inside, dry that too. Let everything sit exposed to air for five minutes before reassembling. This step alone fixes many ignition failures.
6. Confirm spark returns. Place the burner cap back in its original position over the igniter—the electrode should poke through the center. Set the grate back on top. Turn the burner knob to high and listen for the click-click-click sound. You should see a small blue spark jump between the electrode and the cap rim. If spark appears and you smell gas, turn the knob off immediately and let it rest five seconds before trying again. If no spark, proceed to the spark module test.
7. Test the module output. If you heard no clicking at all, the spark module—a small electronic box under or behind the control panel—has failed. Locate it by consulting your stove's manual or looking for a small black plastic module with wires running to the burners. Note which wire attaches to your problem burner. If you have a multimeter, check for 12-volts at the spark module output when the burner knob is turned on. If the module shows no voltage, it's failed. If you don't have a meter, the safest approach is replacement.
8. Isolate valve obstruction. If you see a strong spark but smell no gas and hear no ignition, the burner's control valve may be stuck. This valve sits behind the knob and controls gas flow. Try turning the knob to medium instead of high; sometimes a partial opening releases stuck gas. If that works, the valve is sticking but not completely failed. Repeat a few times to loosen it. If nothing flows at any setting, the valve is blocked or damaged and needs professional replacement.
9. Swap the failed electrode. If you confirmed the spark module works (other burners ignite) but this burner shows no spark at the electrode, the igniter needs replacement. Most are held in by a single screw or push-fit ceramic base. Remove the screw or gently pull the old igniter out. Get the exact model number from your stove manual—igniters are model-specific. Insert the new igniter, tighten the screw or press it firmly into place, and reassemble the burner cap and grate. Test immediately.
10. Install new spark module. If the spark module tests negative (no voltage output), it's failed and must be replaced. Turn off the stove's electrical circuit at the breaker. Locate the module, photograph the wire configuration, and disconnect all wires by pressing small tabs or unclipping connectors. Remove the mounting screws and lift out the old module. Position the new module, secure it with screws, and reconnect all wires in their original positions. Restore power and test all burners.
11. Run full ignition cycle. Once repairs are complete, turn the burner knob to high and observe for spark and ignition. You should see spark, hear a light pop or whoosh, and see the blue flame appear within two seconds. If flame appears, turn it off and run through the ignition cycle three more times to confirm reliability. If it fails again on the second or third try, you may have a secondary issue—contact a tech for diagnosis.
12. Confirm all burners fire. Before you consider the job done, light each of the other three burners in turn to confirm none are affected and the spark module is healthy. If all four burners now ignite, you've solved the problem. If another burner is now failing, the spark module is running out of power and needs professional replacement—this is rare but possible on older stoves.