How to Refill a Butane Torch Lighter (and Fix One That Will Not Light)

A torch lighter that has stopped working is almost never broken. In the overwhelming majority of cases it is full of air rather than butane, and the fix takes about ninety seconds and no tools beyond a small screwdriver.

This covers the whole thing: how to refill one properly, the purge step that nearly everybody skips, what to do when it sparks but will not light, how to set the flame, and which butane to buy so you are not doing this again next month.

Why air is the problem

Butane cans push liquid fuel into the tank, but a small amount of air goes in with it every single time. The air does not burn and it does not escape on its own, so it accumulates.

After four or five refills a lighter can be mostly air. The tank feels full, the fuel window may even look right, and the igniter sparks perfectly. There is simply not enough butane reaching the jets to sustain a flame. That is why a lighter that has been refilled several times suddenly stops working for no apparent reason, and it is why bleeding it fixes the problem instantly.

How to purge a torch lighter

How to refill it properly

Now, and only now, put fuel in. Note that this step is done upside down, which is the opposite of the purge.

Troubleshooting, by symptom

If the refill did not fix it, work through these in order. They are listed by how often each one turns out to be the actual cause.

Which butane to buy

Buy refined butane, and buy the most refined you can find. Cans are usually labeled by filtration: triple refined, five times refined, and so on. The number describes how much of the impurity has been taken out.

Unrefined butane leaves a residue that builds up inside the jets. The lighter starts burning yellow, then intermittently, then not at all, and the owner concludes the lighter was cheap when the fuel was the problem. It is the single most common way a good torch lighter gets ruined.

• Look for five times refined or better. Triple refined is acceptable. Anything unlabeled is a gamble.
• Buy a can with a metal fill tip and a set of adapters. Plastic tips fit poorly and vent fuel past the valve instead of into it.
• A large can is better value and lasts longer than the small ones sold at the counter, and you will use it for years.
• Store it upright, indoors, away from heat. Not in a car in summer.

Setting the flame, and keeping it clean

A correct torch flame is blue, sharp and quiet. You should see defined cones rather than a soft plume. If it roars, it is too high. If it is yellow or wavering, it is too low or the fuel is poor.

Adjust in small increments. The dial has far more range than it appears to, and a quarter turn is usually the difference between a weak flame and a blowtorch. Set it, light it, look at it, then adjust again.

Clean the jets every few months. Compressed air blown across the jet ports from the outside clears most of what accumulates. Do not push anything metal into the ports, because widening them permanently changes how the lighter burns.

Wipe the valve. Fuel residue and pocket lint around the refill valve is what makes the next fill leak past the seal instead of going in.

If yours is genuinely finished

Sometimes the answer is that it was a cheap lighter with a soft valve and it has done its time. If you are replacing it rather than reviving it, three things actually matter, and none of them is the brand printed on the side.

• A visible fuel window. Being able to see the level removes the guesswork that causes most of the problems above.
• A metal body and a metal valve. Plastic valves are what fail first, and they are the reason cheap torch lighters leak.
• Two or three jets rather than one. A double or triple torch lights an even burn far faster, and it is more forgiving in wind.

These three are ours, they all take a standard refill, and they cover the range from a pocket lighter to a full desk piece.

The pocket one

Single torch, monogrammed, the everyday option

$29.99

Torch and cutter in one

Double jet, and it is our best selling lighter

$49.99

The desk piece

Twin jets, cutter and punch built in

$74.99

The rest are in torch lighters and cigar lighters, and if you would rather not deal with butane at all, an electric arc lighter charges by USB and has no fuel, no valve and nothing to purge. It will not light a cigar as evenly as a torch, but it will never do the thing this article is about.

Common questions

How do you refill a butane torch lighter?

Purge it first with the lighter upright, pressing the refill valve until the hissing stops. Then turn the flame adjuster all the way down, invert both the can and the lighter, and press the nozzle straight into the valve for four or five seconds. Wait two to five minutes before lighting it, then bring the flame back up slowly.

Why will my torch lighter not light after refilling?

Because there is air in the tank. Every refill pushes a little air in with the fuel, and after four or five refills the tank can be mostly air. Purge it fully with the lighter upright until pressing the valve makes no sound at all, then refill and wait a few minutes before trying again.

How do you purge or bleed a butane lighter?

Hold it upright and away from your face, then press a small flat screwdriver straight down into the refill valve on the base. Hold until the hissing stops, shake it, and repeat two or three times until pressing the valve is silent. Do this before every refill rather than only when something is wrong.

My torch lighter sparks but there is no flame. What is wrong?

Nearly always air in the tank or an empty tank, not a faulty igniter. Purge fully, refill, and wait three minutes. If it still sparks without lighting, purge a second time, because the first bleed often leaves air behind in the corners of the tank.

What butane should I use in a torch lighter?

Refined butane, five times filtered if you can get it and triple refined at minimum. Unrefined fuel leaves residue that clogs the jets, which is what turns the flame yellow and eventually kills the lighter. Choose a can with a metal fill tip rather than plastic.

Why is my torch lighter flame yellow instead of blue?

Either the fuel is low grade and has left residue in the jets, or the ports are dirty, or the flame is set too low. Blow compressed air across the jets from the outside, purge, refill with properly refined butane and set the flame slightly higher. Never push metal into the jet ports.

How do you adjust the flame on a torch lighter?

Use the slotted dial on the base, turning toward plus to raise it and minus to lower it. Move it in small increments and light it between adjustments, because a quarter turn covers a lot of range. A correct flame is blue, sharp and quiet rather than roaring.

Is it worth repairing a torch lighter?

Purging, refilling, cleaning the jets and adjusting the flame fix almost everything and cost nothing. A cracked tank, a valve that vents continuously or a body bent by a hard drop are not worth repairing, because a leaking pressurized fuel tank is not a sensible thing to keep using.