Stovetop Bialetti Moka pot does not produce coffee; only steam escapes and the upper chamber remains mostly empty.

Safety first: Remove the moka pot from heat before disassembling. Allow it to cool slightly to avoid steam burns.

• Check water level: Fill the lower boiler only up to the safety valve, not above. Overfilling can affect pressure and flow.
• Fill basket correctly: Use medium-fine ground coffee and fill the filter basket level, without tamping. Lightly level with your finger.
• Inspect gasket and filter plate: Remove the rubber/silicone gasket and metal filter plate from the upper chamber. Clean both and the mating surfaces. Replace the gasket if it is cracked, flattened, or hardened.
• Check safety valve: Ensure the safety valve on the lower chamber is clean and not stuck open. Clean around it with a brush; if it leaks or is corroded, replace it.
• Reassemble firmly: Screw the upper and lower chambers together tightly so the gasket can seal properly.

If the problem persists, replace the gasket set and safety valve with genuine Bialetti parts.