Coffee Maker Gurgling or Sputtering? Causes and Easy Fixes

Does your coffee maker make a strange gurgling or sputtering sound while brewing? A little bubbling noise is normal in many coffee makers. However, loud gurgling, water spitting, slow brewing, or a machine that makes noise without producing coffee may indicate a problem.

In many cases, you do not need to replace your coffee maker. Mineral buildup, a clogged filter, trapped air, or restricted water flow may be responsible. The right fix depends on your coffee maker type and when the noise occurs.

In this guide, I will explain how to identify the cause, troubleshoot the problem safely, and prevent the noise from returning.

Quick Answer: Why Is My Coffee Maker Gurgling or Sputtering?

A coffee maker may gurgle or sputter because of normal brewing activity, mineral buildup, a clogged water outlet, trapped air, or a problem with the water supply. First, check the water reservoir, filter basket, and removable parts. If the noise is louder than usual or brewing takes longer, clean and descale the machine according to its manufacturer’s instructions.

If the machine makes a loud noise but no coffee comes out, stop repeated brewing attempts and check for a blockage or water-flow problem.

Is It Normal for a Coffee Maker to Gurgle or Sputter?

Yes, some gurgling is normal. Many drip coffee makers heat water and move it through the brewing system using steam and gravity. This process can create bubbling sounds.

For example, KitchenAid explains that gurgling at the end of a brewing cycle can be normal when the water has emptied from the reservoir. Philips also notes that brewing noise can come from steam.

However, a change in the sound deserves attention.

According to KitchenAid’s coffee maker troubleshooting guide, loud gurgling during brewing, longer brewing times, excessive steam, and water remaining in the reservoir after brewing may indicate that cleaning or descaling is needed.

Gurgling at the End of the Brew Cycle

If your coffee maker makes a brief bubbling sound as the cycle finishes, it may be operating normally.

Check whether the coffee tastes normal, the brewing time has stayed consistent, and the machine dispenses the expected amount of coffee.

If everything works as usual, you probably do not need to do anything.

Loud Gurgling During Brewing

A new or unusually loud gurgling sound may point to mineral buildup or restricted water flow.

You may also notice that the machine takes longer to brew, releases more steam, or leaves water in the reservoir.

These signs do not prove that limescale is the cause, but they make cleaning and descaling sensible first steps.

When Sputtering Means Something Is Wrong

Pay attention if your coffee maker:

• Makes loud pumping or sputtering noises.
• Produces only a few drops of coffee.
• Spits water from an outlet or around a removable part.
• Takes much longer to finish brewing.
• Stops brewing before the expected amount of coffee is ready.
• Makes unusual noises after cleaning and descaling.

If you notice smoke, sparks, a burning electrical smell, or water leaking near electrical components, stop using the machine and disconnect it from power if you can do so safely.

Why Is My Coffee Maker Gurgling or Sputtering?

Several problems can create similar sounds. Check the following possible causes before assuming that your coffee maker is broken.

1. Mineral Buildup and Limescale

Mineral deposits are a common reason for changes in coffee maker performance.

When water is heated repeatedly, minerals can collect inside the machine. This buildup is often called limescale. It may restrict water passages and affect normal brewing.

You might notice:

• Slower brewing than usual.
• Louder bubbling or gurgling.
• More steam than before.
• Incomplete brewing.
• Water remaining in the reservoir after the cycle.

If you have not descaled your machine for a long time, mineral buildup is worth checking.

Follow the manufacturer’s cleaning schedule and use a suitable descaling product. The correct method depends on the model.

2. A Clogged Filter Basket or Water Outlet

Coffee grounds, fine particles, and coffee oils can collect in the filter basket and water outlet.

A clogged or dirty part may interfere with water distribution. In some machines, this can cause sputtering, slow brewing, or uneven extraction.

To check for this problem:

1. Turn off the coffee maker and let it cool.
2. Remove the filter basket and other removable parts.
3. Empty the used coffee grounds.
4. Wash the parts according to the manufacturer’s instructions.
5. Check the accessible water outlets for visible residue.
6. Reassemble everything correctly before testing the machine.

Do not insert sharp objects into a hot machine or force them into a narrow outlet. Use the cleaning tools recommended for your model.

3. Trapped Air in the Water System

Trapped air can be a problem in some espresso machines and other coffee makers that use a pump.

You may hear a loud humming or pumping noise while little or no water comes out. This can happen after the reservoir runs empty, following initial setup, or after a water filter is installed incorrectly.

For example, Philips explains how trapped air can prevent an espresso machine from dispensing coffee.

If you use an espresso machine, follow its specific priming instructions. Do not apply an espresso machine’s procedure to a regular drip coffee maker.

4. An Incorrectly Positioned Water Reservoir or Filter

Some coffee makers will not draw water properly if the reservoir is not seated correctly.

A removable water filter can also affect water flow if it is clogged or installed incorrectly.

Check that:

• The reservoir contains enough water.
• The tank is fitted securely.
• The water filter is installed in the correct position.
• The filter is not past its recommended replacement period.

If the machine uses a replaceable filter, check the manufacturer’s instructions before removing or replacing it.

5. Too Much Coffee or the Wrong Filter

An overfilled filter basket or incorrectly sized paper filter can cause brewing problems.

Too many grounds may restrict water flow. A poorly fitted filter may fold, collapse, or allow water to move around the coffee instead of through it evenly.

Try using the recommended amount of coffee and the correct filter size.

If your machine overflows, stop the cycle and let it cool before cleaning the basket.

6. A Pump or Internal Component Problem

If cleaning and descaling do not help, the cause may be a pump, valve, or another internal component.

This is more likely if the machine repeatedly makes loud noises without moving water, leaks, or stops brewing despite having a full reservoir.

Do not open the electrical housing to investigate the problem yourself. Check the warranty and contact the manufacturer’s support team if basic troubleshooting does not work.

How to Fix a Coffee Maker That Is Gurgling or Sputtering

Follow these steps in order. Start with simple checks before moving on to descaling or professional repair.

Step 1: Turn Off the Machine and Let It Cool

Switch off the coffee maker and allow it to cool before removing the filter basket or cleaning any parts.

Hot water and steam can cause burns. Never remove a pressurised component from an espresso machine.

If you suspect an electrical fault, do not continue testing the machine.

Step 2: Check the Water Reservoir

Make sure the reservoir contains enough water and sits correctly in its position.

If the tank is nearly empty, refill it according to the manufacturer’s instructions. If it has a removable water filter, check whether the filter is correctly installed.

For machines that make noise but do not dispense water, consult the manufacturer’s troubleshooting guide before attempting to prime the system.

Step 3: Clean the Filter Basket and Removable Parts

Remove the used grounds and wash the filter basket, reusable filter, and carafe.

Coffee oils and fine particles can collect over time, even when the machine looks clean from the outside.

If the model has an accessible water outlet or showerhead, clean it using the recommended method.

Allow removable parts to dry if required by the manufacturer’s instructions, then reassemble them correctly.

Step 4: Check the Carafe and Filter Position

Make sure the carafe sits properly beneath the basket and the filter fits securely.

On some drip coffee makers, an incorrectly positioned carafe can interfere with the flow of coffee into the pot. A collapsed filter or overfilled basket may also cause overflow.

Use the correct filter and avoid filling the basket beyond the recommended level.

Step 5: Descale the Coffee Maker

If the machine is overdue for maintenance or shows signs of restricted water flow, descaling may help.

Descaling removes mineral deposits that collect inside the water system.

To descale safely:

1. Read the manufacturer’s descaling instructions.
2. Remove the water filter if the instructions require it.
3. Prepare the recommended descaling solution.
4. Run the specified cleaning cycle.
5. Rinse the machine using the required number of fresh-water cycles.
6. Check whether brewing speed and noise have returned to normal.

Do not assume that vinegar is suitable for every coffee maker. Some manufacturers recommend a specific descaling product.

For more information, see KitchenAid’s official instructions for gurgling noise and descaling.

Step 6: Remove Trapped Air if Your Model Allows It

If you have a pump-operated espresso machine, trapped air may be preventing water from flowing properly.

Use the manufacturer’s priming instructions for your exact model. Some machines require a particular hot-water or rinse procedure.

Do not repeatedly run the pump without water or try to force water through a blocked system. If the machine remains noisy without dispensing water, contact the manufacturer.

Step 7: Run a Water-Only Test Cycle

After cleaning and reassembling the machine, run a water-only cycle if your model supports it.

Watch for these signs:

• Water flows at its usual speed.
• The machine completes the cycle.
• No water leaks from the reservoir or other parts.
• The noise has returned to its normal level.

If the machine still sputters or stops brewing, do not keep repeating the cycle. Move on to the troubleshooting advice for your coffee maker type.

Coffee Maker Making Noise but No Coffee Is Coming Out

A machine that makes noise but produces no coffee needs more careful troubleshooting than one that simply bubbles during brewing.

Check the Water Supply

Make sure the reservoir is full and correctly positioned.

If the machine has a replaceable water filter, check its condition and installation. A clogged filter or trapped air may prevent proper water flow in some models.

Check for a Blocked Outlet

Turn off the machine and allow it to cool. Clean the accessible filter basket, dispensing spout, or outlet according to the manual.

For espresso machines, a clogged brew group or coffee outlet may stop coffee from coming out even when the machine is running.

Check for Mineral Buildup

If the machine has been used for a long time without descaling, mineral deposits may restrict water flow.

Use the recommended descaling procedure. If the machine cannot complete the required cycle, contact the manufacturer rather than forcing it to run.

Know When to Stop Troubleshooting

If the pump continues making unusual noises but no water comes out, the machine may need professional service.

Stop using it if you notice leaking near electrical parts, an electrical burning smell, or other signs of damage.

Why Is My Coffee Maker Spitting Water or Producing Too Much Steam?

Water spitting and excessive steam can have different causes depending on the type of coffee maker.

Possible Causes of Spitting Water

Water may spit or spray if a removable part is not fitted correctly, a filter basket is overflowing, or a water outlet is partly blocked.

On a pod machine, a clogged needle or dispensing outlet may affect the flow. On an espresso machine, a blocked outlet or a problem with the water system may cause irregular dispensing.

Turn off the machine before inspecting any accessible parts. Do not touch hot outlets or attempt to clear a pressurised system.

What Excessive Steam Could Mean

Some steam is normal during brewing. However, a noticeable increase in steam combined with louder gurgling or longer brewing times can indicate that the machine needs descaling.

Philips discusses this in its official coffee maker noise troubleshooting guidance.

If the machine releases steam from an unexpected location, leaks, or appears to overheat, stop using it and consult the manual or manufacturer.

How to Fix the Problem Based on Your Coffee Maker Type

Different coffee makers move water in different ways. The correct solution depends on the design of your machine.

Drip Coffee Makers

For a standard drip coffee maker:

• Check the water reservoir.
• Clean the filter basket and showerhead if accessible.
• Make sure the filter and carafe are positioned correctly.
• Descale the machine if required.
• Run a water-only test cycle.

A brief gurgle at the end of brewing may be normal. Loud gurgling throughout the cycle, unusually slow brewing, or incomplete brewing deserves further investigation.

Single-Serve or Pod Coffee Makers

For a single-serve machine:

• Check that the reservoir is seated correctly.
• Inspect the pod holder and accessible dispensing parts.
• Clean the needle or outlet only as instructed by the manufacturer.
• Check the water filter if your model uses one.
• Descale the machine when required.

Do not force open a hot pod chamber. Allow the machine to cool and follow the safety instructions in the manual.

Espresso Machines

For an espresso machine:

• Check the water tank and filter installation.
• Inspect the portafilter and basket for blockages.
• Use the correct grind size and amount of coffee.
• Follow the manufacturer’s priming instructions if trapped air is suspected.
• Descale when the machine indicates that maintenance is needed.

If the pump is noisy and no water comes out, do not assume that trapped air is the only possible cause. A blockage or mechanical problem may also be responsible.

What If Your Coffee Maker Still Gurgles After Descaling?

If the noise continues after descaling, check whether the machine was rinsed properly and whether the cycle completed successfully.

Rinse the Machine as Directed

Follow the manufacturer’s instructions for rinsing away the descaling solution. Some machines require multiple fresh-water cycles.

Do not drink the rinse water.

Check the Brewing Performance

After rinsing, check whether the brewing time, water flow, and noise have improved.

If the machine still leaves water in the reservoir, produces very little coffee, or makes unusually loud noises, there may be another cause.

Contact Manufacturer Support

If cleaning and descaling do not resolve the issue, consult the manual or contact the manufacturer.

A persistent problem may involve a pump, valve, sensor, or another internal component that requires professional attention.

How to Prevent Coffee Maker Gurgling and Sputtering

Regular care can help reduce mineral buildup, keep water flowing properly, and maintain consistent brewing.

Clean Removable Parts Regularly

Wash the filter basket, carafe, and other removable parts according to the manual. Remove used grounds after brewing and avoid leaving coffee residue to build up.

Descale According to Water Hardness

Hard water can lead to faster mineral buildup than softer water.

Follow the recommended descaling schedule for your machine, taking local water conditions and how often you brew into account.

Use the Correct Coffee Grind and Filter

Use the grind size, filter type, and coffee quantity recommended for your brewer.

Too much coffee or an unsuitable filter can interfere with normal water flow.

Check Water Filters When Needed

If your machine uses a replaceable water filter, follow the manufacturer’s replacement instructions.

A filter that is clogged, incorrectly fitted, or overdue for replacement may affect water delivery.

Pay Attention to Changes in Sound

You do not need to worry about every bubbling noise. Instead, learn what normal brewing sounds like on your machine.

If the sound becomes much louder, the brewing time changes, or the coffee stops flowing properly, investigate the cause early.

Frequently Asked Questions

Why does my coffee maker gurgle at the end of brewing?

A brief gurgling sound at the end of a drip coffee maker’s brewing cycle can be normal as the reservoir empties. If the noise is new or much louder than usual, or brewing takes longer, check for mineral buildup and restricted water flow.

Why is my coffee maker sputtering but not brewing?

Possible causes include a low water level, trapped air in some pump-operated machines, a clogged outlet, or mineral buildup. Check the reservoir and accessible removable parts first. Follow the manufacturer’s instructions for priming or descaling.

Why is my coffee maker making noise but no coffee is coming out?

The machine may have a water supply problem, blockage, trapped air, or an internal fault. Turn it off, check the reservoir and accessible outlets, and follow the manual. If the pump remains noisy without dispensing water, contact manufacturer support.

Can limescale cause a coffee maker to sputter?

Yes. Mineral deposits can restrict water passages and interfere with normal brewing. If the machine brews slowly, produces excessive steam, or makes louder gurgling noises, descaling may help. Always use the method recommended for your model.

Why is my coffee maker spitting water?

Water spitting may result from a blocked outlet, incorrectly positioned parts, an overflowing filter basket, or a problem with the water system. The cause depends on the machine type, so inspect only accessible parts after the machine has cooled.

Is excessive steam a sign that my coffee maker needs descaling?

It can be. Excessive steam combined with loud gurgling or longer brewing times may indicate mineral buildup. However, steam alone does not confirm the cause. Check your machine’s troubleshooting guide before deciding what maintenance it needs.

Why does my coffee maker still gurgle after descaling?

The sound may be normal for your model, or another blockage or mechanical problem may remain. Complete the recommended rinse cycle and check the water flow. If the noise is unusually loud or brewing remains incomplete, contact the manufacturer.

When should I replace a noisy coffee maker?

Do not replace a machine just because it makes a bubbling sound. First determine whether the noise is normal or caused by a maintenance issue. Consider replacement if the machine has a serious fault, repairs are not worthwhile, or the manufacturer recommends replacing it.

Final Thoughts

A coffee maker that gurgles or sputters is not always broken. A brief bubbling sound may be part of normal brewing, but loud noise, slow water flow, excessive steam, or incomplete brewing can indicate a problem.

Start by checking the water reservoir, filter basket, and removable parts. If mineral buildup is likely, descale the machine according to the manufacturer’s instructions and run the recommended rinse cycle.

If the machine still makes unusual noises or will not dispense coffee, stop repeated brewing attempts and seek professional support. Finding the cause first can save time, reduce unnecessary repairs, and help you get back to a normal cup of coffee.