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Gas Grill Burner Won't Light Even Though Tank Is Full

A full propane tank and clicking igniter but no flame is frustrating. Walk through the regulator reset, burner-tube cleaning, and igniter alignment before you declare the grill dead.

Category:Outdoor
Difficulty:Easy
Time:15 min
Success:50%
Updated:May 25, 2026

quick_referenceQuick Answer

For Gas Grill Burner Won't Light Even Though Tank Is Full, start with "Reset the regulator before touching the burners": Turn all burner knobs OFF, shut the tank valve fully, and disconnect the regulator from the tank. Wait 60 seconds — this resets the internal bypass valve that trips when it detects a sudden surge. Reconnect the regulator hand-tight only (never wrench it), then open the tank valve slowly — like, quarter-turn first, pause, then full open. Now try lighting one burner. Three out of four 'no-light' calls resolve right here. Stop DIY if you smell gas heavily before attempting any ignition — leave the area and call the gas company. This is listed as a easy recovery and usually takes about 15 min.

verifiedGuide Snapshot

Repair areaOutdoor
Estimated time15 min
DifficultyEasy
Stop conditions4

Last updated May 25, 2026. Review the stop conditions before continuing.

account_treeRecovery State

DeviceGas Grill
Current stateWont Light
Specific stateRegulator Tripped Or Burner Clogged
Failed stepIgnition Troubleshooting
Likely failure typeBlocked Path
DIY boundaryDIY recovery first
paymentsCost decision

help1. Understand the Problem

Gas grills fail to light for three common reasons: the regulator has tripped into bypass mode, spider webs block the burner venturi tubes, or the igniter electrode is too far from the burner. None of these need a repairman — just patience and a wire brush.

build_circle2. Try This First

Best First Step
Reset the regulator before touching the burners

Reset the regulator before touching the burners

Turn all burner knobs OFF, shut the tank valve fully, and disconnect the regulator from the tank. Wait 60 seconds — this resets the internal bypass valve that trips when it detects a sudden surge. Reconnect the regulator hand-tight only (never wrench it), then open the tank valve slowly — like, quarter-turn first, pause, then full open. Now try lighting one burner. Three out of four 'no-light' calls resolve right here.

visibility3. Visual Guidance

See what's happening and how to try the first recovery step.

1
Clean the burner venturi tubes of spider webs and debris
Clean the burner venturi tubes of spider webs and debrisSpiders love the smell of propane. They build nests inside burner tubes where the gas and air mix. Remove the burners (usually lift straight up or one screw), hold them up to a light, and look through the tube. Push a bottle brush or a bent coat hanger all the way through. Shake out the debris. A blocked venturi means gas never reaches the igniter.
2
Inspect and clean the burner ports with a wire brush
Inspect and clean the burner ports with a wire brushWith the burner tubes back in place (or still out), wire-brush each burner top in the direction of the slots, not across them. Clogged ports create uneven flame and can prevent the carryover tube from lighting the next burner. A paper clip works to pick out crusted port holes.
3
Check the igniter electrode gap and wire connection
Check the igniter electrode gap and wire connectionThe igniter electrode should be spaced about 1/8 inch from the burner surface and the ceramic insulator should be clean. If the spark jumps to the burner body instead of the gas port, bend the electrode bracket slightly with pliers. Also check that the wire connector at the back of the igniter button hasn't fallen off.

autorenew4. If That Doesn't Work

Try the next recovery options.

local_fire_department
Test with a match to isolate the igniter problemIf you hear clicking but no flame, hold a long match through the lighting hole after turning one burner to high. If it lights with a match, the gas supply is fine and your igniter is the problem — clean or replace the electrode.
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plumbing
Check for a kinked regulator hoseA hose pinched between the tank and the cart cuts gas flow. Inspect the full length of the hose for kinks, cracks, or chew marks from rodents. If the hose is older than 5 years, replace it proactively.
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air
Clean the carryover tube between burnersIf the first burner lights but the others won't catch, the carryover tube is blocked. It's the slot-shaped metal channel between burners — clean it with a small wire brush or compressed air.
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Frequently Asked Questions

Why does my grill click but won't light with a full tank?expand_more
The regulator almost certainly tripped into low-flow safety mode. Turn everything off, disconnect and wait 60 seconds, then reconnect and open the tank valve slowly. This resets the bypass and restores full gas flow.
How do I know if my igniter is bad or it's a gas problem?expand_more
Try lighting the burner with a long match or lighter through the manual lighting hole. If it lights, the gas is flowing and the igniter needs attention. If it doesn't light, you have a gas supply or burner blockage problem.
Can spider webs really stop a grill from lighting?expand_more
Yes — it's incredibly common. Spiders build dense webs inside the venturi tubes because they're attracted to the mercaptan odorant in propane. The webs block air mixing and gas flow completely.
How often should I clean my grill burners?expand_more
Brush the burner tops every 3-4 grilling sessions and do a full burner-tube cleaning at the start of each grilling season. Spiders move back in within weeks.

warning5. Stop DIY If

Don't continue if any of these apply.

reportYou smell gas heavily before attempting any ignition — leave the area and call the gas company.
reportThe regulator or hose has visible cracks, splits, or hisses audibly when the tank is open.
reportFlames are yellow and lazy instead of blue — incomplete combustion can produce carbon monoxide.
reportThe burner tube metal is rusted through with holes beyond the designed ports — the burner is unsafe.
Still stuck?Get personalized help with AI Recovery.

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This page provides general DIY guidance.
If you're unsure, it's always best to consult a professional.