Carburetors are critical to engine performance—but their intricate design and tendency to accumulate carbon, oil sludge, and varnish make them notoriously difficult to clean by hand. Ultrasonic cleaners have become the go-to solution for automotive professionals and repair enthusiasts, using cavitation to reach internal channels and dislodge stubborn buildup. But to achieve optimal results, you need the right equipment settings and the right cleaning solution.

Recommended Ultrasonic Cleaner Settings for Carburetors

Frequency:
Use a low-to-mid frequency cleaner, ideally 28–40 kHz. Lower frequencies create more aggressive cavitation, ideal for breaking down carbon and grease in tight spaces.

Power:
Choose a machine with 300–600W for small-to-medium carburetors. This ensures thorough cleaning without damaging components.

Tank Size:
A 6–15L capacity cleaner works well for individual or small-batch carburetor cleaning, suitable for workshops and DIY users alike.

Heating Function:
Activate the heating feature and maintain the temperature between 50–60°C. Heat softens oil residues and enhances cleaning fluid effectiveness.

What Cleaning Solution Should You Use?

Use These:

Industrial degreasers and carburetor-specific solutions: Designed to dissolve carbon and oil without damaging aluminum or brass components.
Water-based ultrasonic cleaning fluid with surfactants: Non-ionic surfactants help lift and suspend particles for a cleaner finish.

Avoid These:

Strong acids or alkalis: These can corrode metal components, especially soft alloys like aluminum.
Flammable solvents: Dangerous when heated or cavitated—never use them in ultrasonic tanks.

Suggested Cleaning Process

Pre-treatment: Use a brush or compressed air to remove large debris before ultrasonic cleaning.
Set cleaning time: Clean for 5–15 minutes depending on the amount of buildup. For heavy carbon, use two cycles with brief brushing between.
Choose the right temperature: Maintain 50–60°C for optimal grease and varnish removal.
Post-cleaning rinse: Rinse with clean water to remove residual cleaning solution.
Drying: Use compressed air to blow dry components or allow to air-dry in a ventilated area. Avoid high-heat drying to prevent distortion.

Safety and Maintenance Tips

To ensure effective and safe operation when cleaning carburetors, follow these essential safety and maintenance practices.
Always use non-flammable, water-based cleaning solutions—never gasoline, alcohol, or acetone, especially when heating is involved, as these pose serious fire risks. Operate the cleaner in a well-ventilated area and wear gloves when handling chemical agents.
Before turning on the machine, make sure the tank is filled to the proper level. Running the unit dry can damage the transducers and heating elements. After each use, drain and wipe the tank clean to remove sludge and residue that may corrode the surface over time.
Avoid splashing liquid onto the control panel or power cord, and ensure the unit is properly grounded and connected to a dedicated power circuit.

Why Granbo Ultrasonic Cleaners Are Ideal for Carburetors

When it comes to cleaning carburetors, Granbo ultrasonic cleaners deliver unmatched performance with industrial-grade design and smart features. Granbo units use advanced cavitation technology and intelligent temperature control to thoroughly clean intricate carburetor parts—reaching into jets, channels, and nozzles where manual tools can’t.

With a wide range of models, from compact benchtop units to multi-tank industrial systems with filtration and circulation, Granbo supports everything from personal garages to high-volume service centers. Customized configurations allow users to tailor frequency, power, and tank layout to fit any carburetor type or cleaning challenge.

Granbo’s robust technical support, safety-focused design, and full-featured systems make it the trusted choice for professionals who demand reliability and results. Whether you’re restoring a single carburetor or maintaining an entire fleet, Granbo ensures every component comes out spotless, damage-free, and ready for performance.