Did it start after cleaning or a boilover?
Dry the cap, burner head, igniter area, and knob stems before buying parts.
LG gas cooktop troubleshooting
LG Gas Cooktop Keeps Clicking? Check Cap and Moisture
If your LG gas cooktop keeps clicking, stop for gas odor or delayed ignition. If it started after a spill or cleaning, dry the cap, burner head, igniter, and knob area, then seat the cap flat before one short retest.
A recent boilover, wet cleaning, crooked burner cap, or debris near the igniter is the best first clue. Clicking with every knob off after everything is dry points toward an ignition switch.
Use the click pattern: during lighting, after flame is on, after a spill, or with every knob off.
Don’t start with: the spark module. Dry and seat the burner first, then check whether one knob or every knob-off condition is keeping the spark engaged.
If it started after a spill,dry the cap, head, igniter, and knob area first.
If it clicks with all knobs off,stop using it and check for a stuck ignition switch path.
Do this first
- If you smell gas, turn every burner off, ventilate, leave if odor is strong, and call the gas utility or a qualified technician.
- Do not keep turning a clicking burner that lights with a delayed whoosh.
- Let burner parts cool before removing grates, caps, or heads.
- Unplug or disconnect cooktop power before any switch, igniter, or module access.
- Do not spray cleaner into burner wells or knob openings.
- Do not loosen gas tubing or pry stuck burner parts loose.
60-second clicking sorter
Does one burner click after flame lights?
Check cap seating, port debris, moisture, and igniter position at that burner.
Do all burners click while one knob is on?
That can be normal during lighting. Worry when clicking continues after flame catches or with all knobs off.
Does it click with every knob off?
A wet or sticking ignition switch behind one knob moves up the list after the top is dry.
Does every burner click strangely after the cooktop is dry?
The spark module or wiring may need diagnosis. Disconnect power and use service if access is unclear.
Any gas odor or delayed ignition?
Stop testing and call the gas utility or a qualified technician.
Look at the burner top before the module
Most repeat-click calls start where you can see them: cap seating, moisture, crumbs, grease, and the ceramic igniter.
Before you buy anything
Before buying an ignition switch, spark module, burner cap, burner head, or igniter electrode, prove the cooktop is dry and note the exact click pattern. Match model number, burner position, cap shape, igniter lead, switch connector, and module output count.
What the clicking usually means
The click pattern tells you where to look. If one burner keeps snapping after a spill, inspect the cap, burner head, ports, and ceramic igniter before you think about the spark module.
- Moisture after a boilover or wet cleaning can bridge the spark path around the ceramic igniter.
- A burner cap or removable burner head that sits crooked can make a good igniter look bad.
- Grease, crumbs, or carbon film near the burner ports can delay lighting and keep the clicking going.
- A knob that feels sticky or a switch area that stayed wet can keep the ignition switch engaged with the burner off.
- The spark module moves down the list unless several burners fail in a pattern that drying, cap seating, and switch checks do not explain.
What not to do first
A clicking burner is easy to make worse if you chase the expensive part first or push moisture deeper into the controls. A good clue that this is still a surface issue is a recent wet cap, sticky spill, or crumb trail near the igniter.
- Do not keep turning the knob if gas odor is building or the burner lights with a delayed whoosh.
- Do not scrub the white ceramic igniter with metal tools or bend the metal tip.
- Do not flood the burner well or knob stems with cleaner.
- Do not buy a spark module just because the noise is annoying; look for a wet burner, uneven flame ring, cracked igniter ceramic, or off-cycle clicking first.
- Do not pry stuck burner parts loose or loosen gas tubing to get better access.
- Do not replace multiple ignition parts at once. A one-burner problem should point to that burner top or igniter; clicking with every knob off should point toward one control position.
Sort the click pattern before touching parts
Listen for when the clicking starts and stops. That one minute decides whether you work at the burner top, the knob area, or stop for service.
| What you see or hear | What it usually means | Next move |
|---|---|---|
| Clicks only while lighting and stops when flame catches | Normal spark ignition | No repair if the flame is steady and there is no gas odor. |
| Started after cleaning, soup, pasta water, or a boilover | Moisture or residue around the burner or knob stem | Let it cool, dry the parts, and clean gently before replacing anything. |
| One burner lights but keeps snapping | Cap alignment, dirty ports, or local igniter condition | Clean and reseat that burner, then compare the flame ring with another burner. |
| All burners click when one knob turns | Often normal during lighting | Worry only if the clicking keeps going after flame is established or with all knobs off. |
| Clicks with every knob off | Wet or sticking ignition switch behind a knob | Dry the knob area; if it returns on a dry cooktop, service the switch side. |
Clean, dry, and seat the burner flat
Work on a cool cooktop. This is the repair path that fixes many clicking complaints without parts.
- Remove the grate and lift off the burner cap. If the burner head is meant to lift off by hand, remove it without forcing it.
- Blot water from the cap, head, cooktop surface, and around the ceramic igniter with a dry cloth.
- Use a lightly damp cloth and a small amount of mild dish soap on greasy film, then wipe with clean water and dry.
- Clear only loose crumbs from burner ports with a wooden toothpick or soft brush. Do not enlarge the ports.
- Put the burner head and cap back in their locator points so the cap sits flat and does not rock.
- Try one short relight after everything is dry. If the flame now wraps evenly and the clicking stops, you found the cause.
When the knob switch moves up the list
A burner-top problem usually follows one burner. If the cooktop clicks with every knob off after the top is dry, look for one sticky knob stem before you plan a switch repair.
- Pull the knobs straight off only if your cooktop design allows them to come off by hand.
- Look for water tracks, cleaner residue, sticky grease, or sugar spills around the knob stems.
- Wipe the area lightly and let it air out. Do not spray cleaner into the openings.
- Turn each knob from OFF toward LITE and back. A knob that feels gummy, loose, or slow to return helps identify which switch may be staying partly engaged.
- If the cooktop clicks on its own after the burner top and knob area are dry, plan on ignition switch diagnosis instead of more burner cleaning.
- Opening the cooktop body puts you near gas controls and ignition wiring. If you are not set up to disconnect power and identify the harness safely, make this a service call.
Tools You May Need
These are for the visible burner-top and knob-stem checks. They are not permission to open gas fittings or work around powered ignition wiring.
Paid links. As an Amazon Associate I earn from qualifying purchases. Repair Riot may earn a commission at no extra cost to you.
Dry microfiber cloths
Helps when: Blotting moisture from the burner cap, burner head, igniter area, and knob stems without pushing more liquid into openings.
Skip it when: Gas odor, arcing, scorched parts, or a burner piece that needs force to remove means stop and get service.
Compare microfiber cloths on Amazon
Mild dish soap
Helps when: Cutting greasy spill film on removable burner parts when plain water leaves a slippery residue behind.
Skip it when: You would need to spray cleaner into burner wells, knob openings, or around the ceramic igniter stem.
Compare mild dish soap on Amazon
Wooden toothpicks or nylon brush
Helps when: Lifting loose crumbs from burner ports and tight edges without scratching the ceramic igniter or changing port size.
Skip it when: The port is blocked by hard corrosion, a metal pick feels necessary, or the burner head is damaged.
Compare non-metal cleaning picks on Amazon
Inspection flashlight
Helps when: Seeing the igniter ceramic, cap gap, burner ports, knob stems, and model tag without pulling the cooktop apart.
Skip it when: Stop and call a pro if the view requires moving gas tubing, opening a wiring area, or reaching under a powered cooktop.
Compare inspection flashlights on AmazonReplacement Parts
Compare parts only after the symptom points there. The burner cap, burner head, spark igniter, ignition switch, and spark module are different repairs and they are not universal.
Paid links. As an Amazon Associate I earn from qualifying purchases. Repair Riot may earn a commission at no extra cost to you.
Cooktop ignition switch
Helps when: Clicking continues with all knobs off after the burner top and knob-stem area are dry, or one knob clearly triggers it.
Skip it when: The symptom stays with one dirty, wet, or misseated burner, or switch access would put you near wiring you cannot identify.
Compare cooktop ignition switches on Amazon
Cooktop spark module
Helps when: Several burners keep clicking in a pattern that remains after caps, ports, knob stems, and switches are dry and checked.
Skip it when: Only one wet or misseated burner is involved, or the switch path has not been diagnosed.
Compare cooktop spark modules on Amazon
Cooktop burner cap
Helps when: The cap is cracked, chipped, warped, or still rocks after you clean the seating surfaces and set it back in place.
Skip it when: The cap sits flat and drying or cleaning restores normal ignition; match by exact burner position before ordering.
Compare cooktop burner caps on Amazon
Cooktop spark igniter
Helps when: One burner is clean, dry, seated correctly, and the ceramic is cracked or the spark jumps to the wrong spot.
Skip it when: All burners click with the knobs off, or the burner still has moisture, residue, or a crooked cap.
Compare cooktop spark igniters on AmazonFAQ
Why does my LG gas cooktop keep clicking after it lights?
Usually the spark is not proving cleanly through the burner flame. Check for water, crumbs, grease, a cap that rocks, or cracked igniter ceramic before buying parts.
Is it normal for all burners to click when I turn one on?
On many gas cooktops, yes during lighting. The warning sign is clicking after flame is established or with every knob off; turn the cooktop off and stop for gas odor.
Can moisture make a cooktop click for hours?
Yes. Water from cleaning or a boilover can hide under the cap, around the igniter base, or near a knob stem. Let the area dry fully before replacing ignition parts.
What if the cooktop clicks even when turned off?
Make sure every knob is fully off, then dry around the knob stems. If it still clicks on a dry cooktop, the ignition switch path needs diagnosis.
Should I replace the spark module first?
No. Replace a spark module only after moisture, cap seating, ports, igniters, and switch clues have been ruled out and the clicking pattern affects multiple burners.
Can I still use the burner if it keeps clicking?
Do not use that burner until you know why it is clicking. Stop immediately for gas odor, delayed whoosh, uneven flame, or clicking with every knob off.
What part usually fixes repeated clicking?
After a boilover, often no part is needed. If drying and cap seating fix the flame and clicking, stop there; one clean burner points to cap, head, or igniter, while knob-off clicking points toward a switch.
Can cleaner make the clicking worse?
Yes. Cleaner sprayed into burner wells or knob openings can leave moisture or residue where the spark system should stay dry. Wipe with a cloth instead.
How long should I let the burner dry after a spill?
There is no exact timer. Blot visible water, leave removable parts off while they dry, and wait longer if liquid ran under the cap or toward the knobs.
How this page was built
Repair Riot built this page around homeowner-visible gas cooktop clues: spill timing, cap seating, burner ports, igniter condition, knob-off clicking, switch behavior, and gas odor stop points. The source links support cooking fire-risk context; the repair sequence is original guidance.
- NFPA cooking fire safety — supports cooking fire-risk context and safe stop points.
- NFPA home cooking fires report — supports the cooking-equipment fire-risk context used for stop-using guidance.