How to Fix a Leaking Moka Pot (in 5 Quick Steps)

A Moka pot is an electric or stove-top coffee brewer that uses steam pressure to extract coffee from finely ground beans. Moka pot coffee is often described as strong and rich, with a flavor falling between espresso and drip coffee.

One common issue that Moka pot users may face is leaking. This issue not only results in a mess but also affects the quality of the coffee.

Addressing the issue immediately can help avoid waste, maintain efficiency, and save money in the long run. Also, regular maintenance will ensure the best coffee brewing experience.

This article will discuss the causes and symptoms of Moka pot leaks, how to prevent leaks, and how to fix them. Read on to learn more!

Understanding Moka Pot Leaks

To understand Moka pot leaking, we need to understand the reasons and how to identify them. Below, you will find the reasons and how to identify them.

Anatomy of A Moka Pot
Anatomy of A Moka Pot

Causes of Leaks in Moka Pots

There are several potential causes of Moka pot leaks, including:

  • Worn-out gaskets: Moka pots have a rubber or silicone gasket that sits between the upper and lower chambers. The gasket is responsible for creating a seal where the coffee is brewed. Over time, the gasket can become worn out and lose its elasticity, which can cause leaks.
  • Loose parts: Moka pots comprise several parts, including the upper and lower chambers, the gasket, the filter basket, and the spout. If any of these parts are loose or not properly tightened, they can cause leaks.
  • Overfilling the water tank: Moka pots have a water tank in the lower chamber. Don’t overfill the water tank, as this can cause water to leak out of the sides of the pot.
  • Incorrect assembly: Moka pots are designed to be assembled in a specific order. If the parts are assembled incorrectly, it can cause leaks.
  • Clogged filter: If the filter (a metal disk with small holes between the coffee grounds and the water) becomes clogged with coffee grounds or other debris, it can cause leaks.
  • Packed Coffee Grounds: Fill the ground coffee chamber with the coffee grounds but don’t pack it down. Just gently tap to level the coffee grounds, or use your hands to level it. If you tamp heavily water may not pass through, which can cause overpressure, and cause a leak.
  • Uneven heat distribution: If the heat source is not evenly distributed, it can cause the Moka pot to warp or the gasket to become misaligned, resulting in leaks.
  • Leaking from Safety Valve: If the internal seal of the safety valve is damaged water may leak from the safety valve’s head, though it’s quite rare. In that case, you need to replace the safety valve.

How To Identify Moka Pot Leaks?

There are a few ways to identify Moka pot leaks:

Visual inspection for cracks or holes

The first step to identifying leaks in your Moka pot is visually inspecting it. Look for any visible cracks or holes in the pot or the gasket. These could be small or large and may be present on the bottom or sides of the pot.

Leaking Moka Pot
Leaking Moka Pot

Observing leaks during use

If you don’t notice any visible damage, the next step is to observe the pot during use.

  1. Fill the bottom chamber with water.
  2. Add the ground coffee to the middle chamber, and assemble the pot.
  3. Place it on the stove and heat it up.
  4. Check if steam or coffee is leaking from any part of the Moka pot, such as the seal between the top and bottom chambers or the spout.

Pressure loss

If the Moka pot is not producing the usual amount of pressure and coffee is taking longer to come out of the spout, it could be a sign of a leak.

Water accumulation

After using the Moka pot, check for any water accumulation on the surface or around the pot’s base. If there is water, it could be a sign of a leak.

Best Practices to Prevent Moka Pot Leaks

There are several steps you can take to prevent Moka pot leaks, including:

Step 1: Regular Cleaning and Maintenance

After each use, clean the Moka Pot thoroughly, including the rubber gasket and the filter basket. If these parts are not cleaned regularly, they can become clogged or damaged, leading to leaks.

Replacing the rubber gasket periodically is also important, as it can wear out and become less effective over time.

Step 2: Proper Use

Always fill the water reservoir up to the indicated level, and avoid overfilling it, as this can cause excess pressure and leaks. Similarly, ensure that the coffee is not ground too finely, as this can cause clogging in the filter basket and lead to leaks.

Also, use a level heat source to ensure that the heat source is evenly distributed to prevent warping or misalignment of the Moka pot.

Step 3: Proper Storage

After each use, disassemble the Moka pot and allow it to dry completely before storing it. Storing the Moka Pot with water or coffee residue can cause mold and mildew to develop, which can damage the rubber gasket and cause leaks.

Step 4: Correct Assembly

Ensure that all parts are secure before brewing coffee. Also, carefully read the manufacturer’s instructions and follow the correct assembly sequence.

Repairing Moka Pot Leaks [Quick Fix]

Moka pots often develop leaks due to worn-out gaskets or loose parts. Here are some steps to repair a Moka pot that is leaking:

How To Replace the Gasket?

First, identify the gasket that needs to be replaced. The gasket is a rubber or silicone seal that sits between the upper and lower sections of the Moka pot.

Finding the right gasket size for your Moka pot

You can look for the size printed on the gasket. Alternatively, measure the diameter of the upper section of the Moka pot and use that to find the right size gasket.

Replacing the gasket step-by-step

  • Step 1: Once you have the right gasket, remove the old one by gently prying it out with a knife or screwdriver. Be careful not to damage the metal rim that the gasket sits in.
  • Step 2: Clean the area where the gasket sits with a damp cloth to remove any debris or coffee residue.
  • Step 3: Place the new gasket around the metal rim. Ensure it sits flush against the rim and has no wrinkles or gaps.
  • Step 4: Tighten the Moka pot by screwing the top part onto the base.
  • Step 5: To ensure the gasket is properly installed, brew a small test pot of coffee. If there are no leaks or issues with the seal, the gasket has been installed correctly.

How To Tighten Loose Parts?

Let’s look at how to identify loose Moka pot parts and tighten them correctly. Remember never to use excessive force when tightening the parts, as this could damage the Moka pot or strip the threading.

Identifying the loose parts

The three main parts of a Moka pot are the base, the funnel, and the top chamber. Look for any visible gaps or wobbling between the parts.

Tightening the parts correctly

  • The base: If the base is loose, try tightening the screw on the pot’s underside using a flathead screwdriver.
  • The funnel: For a loose funnel, bend the tabs on the side of the funnel that fits into the base. This will make the tabs slightly wider and help them fit more snugly into the base.
  • The top chamber: If the top chamber is loose, try replacing the gasket if it is worn or damaged. If the gasket is in good condition, try tightening the screw on top of the pot. Use a flathead screwdriver and turn it clockwise to tighten.


Understanding the Moka pot leaks helps to identify the problems. After identifying them, follow the best practices to prevent Moka pot leaks.

Otherwise, the leaking Moka pots can create a mess, waste coffee grounds, and impact the taste and quality of your coffee.

But you can try several quick fixes to stop the leaks, including replacing the gaskets, tightening loose parts, and avoiding overfilling the water chamber. Also, correct parts assembly will help prevent Moka pot leaks.

It’s best to take preventative actions to avoid leaks in the first place. Follow the regular maintenance routine outlined in the user manual, clean the pot after each use, and practice proper storage.


Let’s answer the most frequently asked questions about Moka pot leaking.

What are the most common causes of Moka pot leaks?

Loose parts, worn-out gaskets, and a clogged filter are the primary causes of Moka pot leaks. Other causes arise from improper usage, like overfilling the water tank and incorrect assembly.

What should I do if my Moka pot is leaking during use?

Remove the gasket, inspect it for any signs of damage, and replace it if necessary. In addition, ensure the two chambers of the Moka pot are screwed together tightly.

Also, you might want to clean the filter and check the water level to ensure you haven’t overfilled the water chamber.

Can a leak in a Moka pot be fixed without replacing the gasket?

It depends on the nature and severity of the leak. If the leak is caused by a damaged or worn-out gasket, replacing the gasket is the best way to fix the leak. However, if the gasket does not cause the leak, it may be possible to fix the leak without replacing it.

Sujit Modak

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