Moka Pot Not Coming Up?
If your moka pot won't brew, pressure isn't building. There are three culprits: not enough heat, a leak (worn gasket or the pot not screwed tight), or a blockage (clogged filter or a grind that's too fine). Check the seal and filter, fill the base to the valve, and give it steady medium heat.
A moka pot works by building steam pressure in the base and pushing hot water up through the coffee. So when it "stops working" — nothing comes up, or it just hisses and steams — it always means the pressure isn't doing its job. The body itself almost never fails; it's nearly always one of a few simple, fixable things. Work through them in this order.
1. Not enough heat
If the pot never builds pressure, the first thing to check is the hob. Too low a heat means it never reaches the temperature needed to force the water up. Turn it up to a steady medium — not high (which causes bitterness and spluttering), but enough to get things moving. On an induction hob, a small pot may also be too little to register on the zone; that can look like "not working" when the hob simply isn't heating it.
2. A leak: worn gasket or loose fit
If you hear hissing and see steam escaping from the seam in the middle, pressure is leaking out sideways instead of pushing coffee up. Two causes:
- The pot isn't screwed together tightly enough. Let it cool, then screw the two halves together firmly, hand-tight.
- The rubber gasket is worn, hardened or misaligned. Gaskets perish over 6–12 months. Lift it out from under the top chamber, check it's soft and seated flat, and replace it if it's cracked or hard. Spares are cheap and widely available.
3. A blockage: filter or grind
If heat and seal are fine but nothing flows, something is blocking the path:
- The metal filter plate is clogged with old coffee oils and fines. Rinse it thoroughly and check the small holes are clear — see our cleaning guide.
- The grind is too fine. Espresso-fine coffee can pack down and choke the basket, so water can't pass. Go coarser, to a medium-fine, table-salt texture — our grind size guide has the detail.
4. Too little (or too much) water
Not enough water in the base means there isn't the volume to generate proper pressure. Fill it to just below the safety valve every time. Overfilling above the valve is unsafe and also disrupts the brew — see our moka pot ratio guide.
5. A stuck safety valve
If the little valve on the side is jammed with limescale or coffee residue, it can vent pressure or behave unpredictably. Descale the pot (a 50/50 water-and-vinegar brew) and gently work the valve pin loose. Never block or tape over the valve — it's a safety feature.
Fast diagnosis
| Symptom | Likely cause | Fix |
|---|---|---|
| Nothing happens at all | Heat too low / pot too small for induction zone | Raise to steady medium; use a larger pot or adaptor disc |
| Hisses and steams, little coffee | Leak — worn gasket or loose fit | Screw tight; reseat or replace the gasket |
| Builds pressure but won't flow | Clogged filter or grind too fine | Clean the filter; grind coarser |
| Weak trickle only | Too little water in the base | Fill to just below the valve |
| Venting from the valve | Stuck / limescaled valve | Descale and free the valve |
Frequently asked questions
Why is my moka pot not coming up?
The most common reasons are not enough heat, a worn or badly seated gasket letting pressure escape, a blocked filter or safety valve, or too little water in the base. Check the seal and filter, fill the base to just below the valve, and give it enough steady medium heat to build pressure.
Why is no coffee coming out of my moka pot?
If nothing rises into the top chamber, pressure is not building. Usually that is a heat problem (too low), a leak (worn gasket or the pot not screwed tight), or a blockage (clogged filter plate or a grind so fine it has choked the basket). Work through those three in order.
Why does my moka pot leak from the middle?
Steam or coffee escaping from the seam where the two halves meet means the seal is not tight. Either the pot was not screwed together firmly enough, or the rubber gasket is worn, hardened or misaligned. Reseat or replace the gasket and screw the halves together hand-tight.
Can a moka pot stop working?
The body almost never fails, but the wear parts do. A perished gasket, a clogged filter plate, or a stuck safety valve will all stop it brewing properly. All three are cheap to replace or easy to clean, so a moka pot that "stopped working" can nearly always be revived.
Why is my moka pot just steaming and not brewing?
If it hisses and steams but produces little coffee, pressure is escaping instead of pushing water up. Check the gasket and that the pot is screwed together tightly, make sure the base has enough water, and confirm the filter is not clogged. A grind that is far too fine can also block flow.
The bottom line
A moka pot that won't come up is nearly always a quick fix: give it steady medium heat, make sure the gasket seals and the pot's screwed tight, keep the filter clear and the grind not-too-fine, and fill the base to the valve. Get those right and it'll brew for decades. Once it's flowing again, our how to use a moka pot guide will help you perfect the cup.