The AUTOOL HTS559 walnut blasting machine is an advanced car engine carbon deposition cleaning equipment designed to deeply remove carbon deposits from the engine intake pipe, intake manifold, and intake valve backside. It helps address issues such as unstable idle speed, incomplete fuel combustion, reduced air-fuel ratio, increased fuel consumption, and engine shaking caused by carbon buildup.
With a powerful 1400W motor, 30L main unit capacity, built-in dust filter, and simultaneous spray-and-vacuum recovery design, HTS559 uses non-harmful walnut shell abrasive to remove stubborn carbon deposits while recycling reusable walnut media. An external air compressor is required to provide strong blasting impact.
HTS559 combines a 1400W motor, external compressed air, walnut shell abrasive, dust filtration, and closed-loop recovery to clean carbon deposits efficiently while reducing abrasive waste.
1400W High-Power Motor
The 1400W high-performance motor works with an external air source to create strong synchronized suction and blasting recovery, helping remove stubborn carbon quickly and thoroughly.
Deep Carbon Deposit Removal
Deeply removes sticky carbon deposits on the intake manifold and intake valve backside, helping improve unstable idling, insufficient fuel combustion, and reduced air-fuel ratio problems.
External Air Source Blasting
An external air compressor provides continuous impact force for walnut shell abrasive, ensuring stronger removal of carbon deposits from engine intake pipes and valve backsides.
Built-In Dust Filter
The machine sprays and recovers simultaneously. The filter separates walnut shell abrasive from carbon deposits so the abrasive can be reused and residual particles are better controlled.
Integrated Recovery Design
The closed-loop system recycles walnut shell abrasive through vacuum recovery, eliminating the need for manual abrasive recovery and saving time and effort.
5 Adapters And 360° Casters
Equipped with 5 adapters for different vehicle models such as Audi, BMW, GM, Mercedes-Benz, and Land Rover, plus 360° swivel casters for easier workshop movement.
Click to enlargeClick to enlargeClick to enlargeClick to enlargeClick to enlarge
How To Use
How To Use
Use HTS559 with 0.6–1.2mm walnut shell abrasive and an external air compressor. Close the engine, turn the crankshaft to close the intake valve, and clean one intake port at a time.
Connect Hoses And Nozzle
Connect the walnut abrasive suction hose and the sandblasting nozzle before operation.
Select Adapter
Select the appropriate adapter fitting based on the vehicle and the cleaning area.
Install Nozzle Tube
Install the nozzle tube and insert the sandblasting nozzle into the round hole on the suction hose for combined use.
Load Walnut Sand
Open the latches, remove the machine head cover, take out the filter cartridge, add 1kg walnut sand into the stainless bucket, then reinstall the filter cartridge and cover.
Prepare Safely
Wear safety goggles. Before and after operating the equipment, spray air for 10 seconds to help prevent clogging.
Clean Carbon Deposits
Check the carbon deposit condition, insert the suction adapter into the manifold opening, and complete cleaning in about 1–3 minutes per intake port.
Click to enlarge
Use Notes
Wear safety goggles during operation to protect your eyes from debris and potential hazards.
Use 0.6–1.2mm walnut shell abrasive.
Under normal conditions, walnut shell abrasive can typically be reused 5–10 times.
Spray air for 10 seconds before and after operation to prevent clogging.
Clean one intake pipe / intake port at a time.
For a 6-cylinder engine, clean the six intake ports one by one.
Close the engine and turn the crankshaft to close the intake valve before cleaning.
Specifications
HTS559 Specifications
Review the main product specifications, abrasive requirements, air compressor requirements, and product structure before ordering.
Product Overview
Product
AUTOOL HTS559 Walnut Blasting Machine
Cleaning Method
Walnut shell abrasive blasting with vacuum recovery
Motor Power
1400W
Main Unit Capacity
30L
Cleaning Area
Engine intake pipe, intake manifold, and intake valve backside
Not Designed For
Injector, throttle valve, or cylinder carbon cleaning
Abrasive And Air Source
Walnut Shell Size
0.6–1.2mm walnut shell abrasive
Abrasive Reuse
Reusable 5–10 times under normal conditions
Walnut Sand Included
Not included
Air Compressor
External air compressor required; not included
Recommended Air Pressure
0.7MPa / 6bar or above
Air Quality Suggestion
Air compressor with dryer filter recommended to reduce moisture and walnut media clumping
Accessories And Support
Adapters
5 adapters for different vehicle models
Mobility
360° swivel casters
Manual
AUTOOL HTS559 user manual available for download
Warranty
3-year warranty for eligible non-human damage cases
Click to enlargeClick to enlarge
Product Overview
ProductAUTOOL HTS559 Walnut Blasting Machine
Cleaning MethodWalnut shell abrasive blasting with vacuum recovery
Motor Power1400W
Main Unit Capacity30L
Cleaning AreaEngine intake pipe, intake manifold, and intake valve backside
Not Designed ForInjector, throttle valve, or cylinder carbon cleaning
Abrasive And Air Source
Walnut Shell Size0.6–1.2mm walnut shell abrasive
Abrasive ReuseReusable 5–10 times under normal conditions
Walnut Sand IncludedNot included
Air CompressorExternal air compressor required; not included
Recommended Air Pressure0.7MPa / 6bar or above
Air Quality SuggestionAir compressor with dryer filter recommended to reduce moisture and walnut media clumping
Accessories And Support
Adapters5 adapters for different vehicle models
Mobility360° swivel casters
ManualAUTOOL HTS559 user manual available for download
Warranty3-year warranty for eligible non-human damage cases
Click to enlarge
What Is In The Box
What Is In The Box
The package image shows the HTS559 main unit and included accessories. Walnut shell abrasive and external air compressor are not included and must be prepared separately before use.
Main UnitAUTOOL HTS559 walnut blasting machine
Included AccessoriesHoses, spray / nozzle components, adapters, safety goggles, and accessories shown in the packing list image
Walnut SandNot included; use 0.6–1.2mm walnut shell abrasive
Air CompressorNot included; external air compressor required
ManualAvailable for download in the Download section
Product Comparison
Product Comparison
Compare related AUTOOL walnut shell blasting machines before choosing the right power, capacity, abrasive size, cleaning area, operating mode, and filter configuration.
HTS559 FocusUpgraded from HTS558 with 1400W rated power and 30L capacity, suitable for intake pipe and intake valve backside carbon cleaning.
HTS558 FocusBasic walnut blaster model with 1200W rated power and 5 adapters for individual users or workshops.
HTS518 FocusSupports High / Low Mode and Low-Speed Mode, allowing users to select different cleaning modes by application.
HTS678 Focus1500W rated power, HEPA filter, telescoping handle, pressure gauge, Standard Mode, and Expert Mode.
Decision CheckCompare power, capacity, abrasive size, cleaning area, HEPA filter, operation modes, pressure monitoring, and combustion chamber cleaning support before ordering.
Click to enlarge
Related Products
Related Products
Compare related AUTOOL carbon cleaning machines, walnut blasting machines, dry ice cleaning machines, and walnut shell media before choosing the right cleaning method and accessories.
SALE
Select options
This product has multiple variants. The options may be chosen on the product page
Contact AUTOOL Store before ordering if you need to confirm walnut sand size, air compressor pressure, dryer filter use, adapter compatibility, or intake valve cleaning workflow.
HTS559 is a specialized machine for engine intake pipe and intake valve backside carbon cleaning. Review the cleaning range, abrasive size, air compressor requirement, and valve closing procedure before use.
Use Range And Safety Notes
HTS559 is designed for engine intake pipe, intake manifold, and intake valve backside carbon cleaning.
HTS559 is not designed for injector, throttle valve, or cylinder carbon cleaning. Use the corresponding injector cleaner or suitable tool for those areas.
The package does not include walnut sand or an external air compressor.
Use 0.6–1.2mm walnut shell abrasive.
Walnut shell abrasive can normally be reused 5–10 times under normal conditions.
External air compressor required: 0.7MPa / 6bar or above.
An air compressor with dryer filter is recommended to reduce moisture, walnut media clumping, and poor blasting performance.
Close the engine before cleaning.
Turn the crankshaft to close the intake valve before cleaning.
Clean one intake pipe / intake port at a time.
A 6-cylinder engine should be cleaned six times, one cylinder / intake port at a time.
Chemical cleaning agents may corrode pipes and shorten engine service life.
Walnut powder is softer than metal but harder than carbon deposits, helping clean carbon without damaging metal surfaces when used correctly.
After cleaning, blow out remaining walnut particles as much as possible before restarting the engine.
Questions And Answers
These answers cover walnut sand, carbon deposition, cleaning interval, air compressor requirements, package contents, cleaning range, closed-loop operation, abrasive safety, and model selection.
Walnut sand is made from walnut shells that are broken, screened, and classified. It is a natural walnut shell abrasive used as a polishing and cleaning medium. It has high hardness, pressure resistance, wear resistance, and a microporous surface with strong adsorption capability. It does not cause corrosion or pollution when used correctly.
Use 0.6–1.2mm walnut shell abrasive. Under normal conditions, walnut shell abrasive can typically be reused 5–10 times, making it efficient and cost-effective.
Carbon deposition forms when fuel does not burn completely. Hydrocarbon olefin residues attach to the engine intake and cylinder area, then become a hard black shell under high-temperature conditions.
Carbon deposits can decrease the air-fuel ratio, reduce engine output power, increase fuel consumption, and cause engine shaking during idle. The source content recommends cleaning carbon deposits after around every 40,000–50,000 kilometers, depending on actual vehicle condition.
Use an external air compressor with air pressure up to 0.7MPa / 6bar or above. A dryer filter is recommended to effectively prevent moisture buildup, walnut shell media clumping, and poor blasting performance.
No. The package does not include walnut sand or a high-pressure air compressor. Prepare 0.6–1.2mm walnut shell abrasive and a suitable external air compressor before use.
HTS559 is designed for intake pipe, intake manifold, and intake valve backside cleaning only. For injector, throttle valve, or cylinder carbon cleaning, choose the corresponding injector cleaner or other suitable tool.
HTS559 works in a closed loop. The intake valve is closed, walnut powder is sprayed into the engine intake through compressed air, and the machine vacuums and recycles the walnut powder at the same time. After thousands of impacts, walnut abrasive breaks down carbon deposits on the inner wall of the intake pipe and valve backside.
Walnut powder is softer than metal but harder than carbon deposits. When the correct abrasive size and workflow are used, it can remove carbon deposits from the intake pipe and intake valve backside without damaging metal surfaces.
HTS558 is the basic walnut blaster model with 1200W power and 5 adapters. HTS559 is an upgraded version with 1400W power and 30L capacity. HTS518 supports High / Low Mode and Low-Speed Mode. HTS678 has 1500W power, HEPA filter, pressure gauge, and Standard / Expert modes. HTS728 uses finer 0.4–0.6mm walnut shell abrasive and supports engine combustion chamber cleaning.
Related Guides
Related Guides
Use these articles to understand walnut shell carbon cleaning, compare walnut blasting with dry ice blasting, and explore related carbon cleaning methods.
More and more car enthusiasts and professionals are choosing dry ice blasting technology as an efficient and eco-friendly vehicle maintenance method. However, many are.
Warranty And Contact
Warranty And Contact
For HTS559 setup support, walnut shell abrasive size confirmation, air compressor requirement confirmation, dryer filter guidance, adapter selection, intake valve cleaning workflow, replacement parts, or warranty service, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether HTS559 is suitable for your cleaning area, selecting the correct walnut shell abrasive, choosing an air compressor, using the included adapters, downloading the manual, or identifying replacement parts.
3-year warranty for eligible non-human damage cases
Setup and manual support
Walnut shell abrasive size confirmation
Air compressor pressure and dryer filter confirmation
Adapter selection and intake valve cleaning workflow support
Excellent tool for those GDI engines. Everything you need!!! Very nicely packaged; We have a fleet of Ford vehicles and we were clean the intakes and valves well. Big difference in power after wards.
0 of 0 found this review helpful
Rated 5 out of 5
poerjk (verified owner)–
good
Great product, cleans the engine quite well
I recommend all repair shops to buy this
0 of 0 found this review helpful
Rated 5 out of 5
Osvaldo Quinones (verified owner)–
AMAZING !
To everyone reading this, STOP! wasting money on sea foam or other products that you think it will take out the carbon buildup Because it will not! Buy this amazing walnut sandblasting tool and clean that carbon the right way. I did it and so can you. You won’t regret it trust me. God bless everyone.
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Click to enlarge
Rcbar (verified owner) –
Works fantastic
Excellent tool for those GDI engines. Everything you need!!! Very nicely packaged; We have a fleet of Ford vehicles and we were clean the intakes and valves well. Big difference in power after wards.
poerjk (verified owner) –
good
Great product, cleans the engine quite well
I recommend all repair shops to buy this
Osvaldo Quinones (verified owner) –
AMAZING !
To everyone reading this, STOP! wasting money on sea foam or other products that you think it will take out the carbon buildup Because it will not! Buy this amazing walnut sandblasting tool and clean that carbon the right way. I did it and so can you. You won’t regret it trust me. God bless everyone.