AUTOOL HTS728 Walnut Blasting Machine Expert-Grade Carbon Cleaning Machine

AUTOOL HTS728

Product Overview

The AUTOOL HTS728 is a professional walnut blasting machine for engine carbon cleaning. It uses compressed air and fine 0.4-0.6mm walnut shell abrasive to clean combustion chambers, intake manifolds, and intake / exhaust valve areas while the built-in recovery structure and HEPA filter help recycle media and keep the workshop cleaner.

0.4-0.6mm Walnut Media Combustion Chamber Cleaning Intake / Valve Cleaning HEPA Recovery

1400WMotor

≤3.5KGRecommended Load

>0.7MPaAir Source

3 YearsWarranty

AUTOOL HTS728 walnut sand de-carbon cleaner main product image

AUTOOL HTS728 walnut blasting machine product detail image

Product Details

Confirm the abrasive size, loading amount, compressor performance, valve position, and safety preparation before using HTS728. These checks directly affect cleaning performance and engine safety.

Use Fine Walnut Media

HTS728 is designed for 0.4-0.6mm walnut shell abrasive. Walnut sand is made from crushed walnut shells and is used as a physical abrasive for carbon cleaning when applied correctly.

Do Not Overload Media

Do not add more than 3.5KG of walnut sand during use. The specification chart lists the blasting tank capacity as less than 4KG, so 3.5KG is the safer working limit.

External Compressor Required

HTS728 requires an external air compressor. Prepare an air source above 0.7MPa with airflow above 0.4m³/min, and use a dryer filter to reduce moisture and media clumping.

Why Carbon Cleaning Matters

Carbon deposits form when incomplete combustion residue hardens around intake and cylinder areas. Buildup may affect air-fuel ratio, power output, fuel consumption, and idle stability.

Service Interval Guidance

Cleaning frequency depends on mileage, engine design, fuel quality, and symptoms. The source material mentions carbon cleaning after approximately 40,000-50,000 km, or when vehicle condition requires service.

Confirm Engine Safety

Before blasting, confirm the target valves are closed, seal uncleaned intake ports, and prepare safety goggles and a respirator to reduce dust exposure risk.

Key Features

HTS728 combines fine walnut abrasive, combustion chamber support, intake and valve cleaning, HEPA filtration, media recovery, 5 adapters, and workshop-friendly mobility for professional carbon cleaning work.

Combustion Chamber Cleaning

A key HTS728 upgrade is support for combustion chamber cleaning through the spark plug hole, helping remove carbon deposits with less disassembly when the vehicle is prepared correctly.

Intake Manifold And Valve Cleaning

The machine supports sequential cleaning of intake manifold ports and intake / exhaust valve areas, helping remove stubborn buildup from common carbon deposit locations.

0.4-0.6mm Fine Abrasive

The upgraded fine walnut media size helps provide more precise cleaning for engine carbon deposits while reducing the risk of harsh surface damage when used properly.

1400W Motor With External Air Source

A 1400W motor works with an external compressor to support continuous abrasive impact force for cleaning carbon deposits from engine intake and combustion areas.

HEPA Filter And Media Recovery

The equipment sprays and recovers at the same time. The HEPA filter and dust filter mesh help separate walnut abrasive from carbon deposits and support media reuse.

Adapters And Mobile Workshop Design

The kit includes multiple adapters and blasting nozzles for different port shapes. A mobile body with handle and swivel casters makes the unit easier to move around the workshop.

AUTOOL HTS728 before and after carbon cleaning comparison image

AUTOOL HTS728 five blasting nozzles and adapters image

AUTOOL HTS728 wide application adapter image

AUTOOL HTS728 mobile caster detail image

How It Works

HTS728 uses compressed air to accelerate walnut shell abrasive into carbon deposits, then recovers the mixture through the hose and filtration structure to improve workshop cleanliness and media reuse.

Compressed Air Drives Media

The external compressor supplies the air pressure and airflow required to move walnut media through the blasting hose and nozzle.

Walnut Shells Impact Carbon

Crushed walnut shells strike the carbon deposit surface at high speed and help remove buildup from intake, valve, and combustion chamber areas.

Recovery Separates Dust And Media

The recovery hose pulls used media and carbon residue back into the machine, where the filter structure helps separate particles for cleaner operation.

Air Mode Clears Residue

After blasting, use air blowing to help clear remaining walnut shell particles before engine reassembly.

AUTOOL HTS728 dual mode blasting nozzle handle image

AUTOOL HTS728 HEPA filter and dust filter recovery image

AUTOOL HTS728 natural physical walnut shell cleaning image

Specifications

AUTOOL HTS728 Product Specifications

HTS728 is a 1400W walnut blasting machine with external compressor input, HEPA recovery, 0.4-0.6mm abrasive support, 10L storage tank capacity, and professional workshop dimensions.

Power And Air Source
Product	AUTOOL HTS728 Intake Valve Walnut Blasting Machine
Power Supply	AC 110V / 220V
Main Power	1400W
Air Source	External air compressor required
Air Source Pressure	>0.7MPa
Air Source Flow Rate	>0.4m³/min
Walnut Media
Recommended Media Size	0.4-0.6mm walnut shell abrasive
Blasting Tank Capacity	<4KG
Recommended Loading Limit	Do not load more than 3.5KG during use
Storage Tank Capacity	10L
Media Reuse	5-10 times under normal conditions
Structure And Size
Hose Length	2.5m
Total Weight	50kg
Product Size	1110 × 590 × 535mm
Cleaning Areas	Combustion chamber, intake manifold, intake valve area, exhaust valve area
Filtration	HEPA filter and dust filter mesh recovery structure
Warranty	3 years for eligible non-human damage cases

AUTOOL HTS728 product specifications chart

AUTOOL HTS728 product structure and interface diagram

Power And Air Source

ProductAUTOOL HTS728 Intake Valve Walnut Blasting Machine

Power SupplyAC 110V / 220V

Main Power1400W

Air SourceExternal air compressor required

Air Source Pressure>0.7MPa

Air Source Flow Rate>0.4m³/min

Walnut Media

Recommended Media Size0.4-0.6mm walnut shell abrasive

Blasting Tank Capacity<4KG

Recommended Loading LimitDo not load more than 3.5KG during use

Storage Tank Capacity10L

Media Reuse5-10 times under normal conditions

Structure And Size

Hose Length2.5m

Total Weight50kg

Product Size1110 × 590 × 535mm

Cleaning AreasCombustion chamber, intake manifold, intake valve area, exhaust valve area

FiltrationHEPA filter and dust filter mesh recovery structure

Warranty3 years for eligible non-human damage cases

How To Use

Follow the setup, media loading, vehicle preparation, intake cleaning, combustion chamber cleaning, and after-cleaning steps. Always confirm valve closure, port sealing, air pressure, media size, and PPE before blasting.

1. Set Up The Machine

Place the machine in the working area.
Connect the recovery hose to the recovery port and attach the elbow connector.
Connect the sandblasting tube to the spray gun handle.
Connect the air supply to the air inlet, then plug in the power cord and turn on the power switch.

2. Load Walnut Media

Make sure recovery mode is OFF before loading.
Turn ON loading mode and add 0.4-0.6mm walnut shell abrasive.
Do not add more than 3.5KG of walnut sand.
Close the top lid, wear safety goggles, turn OFF loading mode, and let pressure build above 0.7MPa.

3. Prepare The Vehicle

Remove the spark plugs and intake manifold as needed.
Check valve positions before cleaning.
Make sure the target valves are closed.
Seal other intake ports to prevent walnut shell abrasive from entering unintended areas.

4. Clean Intake Ports

Insert the sandblasting tube into the intake port.
Connect the recovery hose to the port and ensure a tight seal.
Turn ON recovery mode, open the spray gun valve, and adjust direction / depth.
Clean each port for about 2 minutes, then check the result.

5. Clean The Combustion Chamber

Rotate the crankshaft to close the valves before blasting.
Insert the spray gun tube into the elbow connector.
Connect the combined hose / gun to the combustion chamber port through the spark plug hole.
Confirm sealing before starting sandblasting.

6. Finish And Clear Residue

Turn off all switches and disconnect hoses and power supply.
Use an air gun to blow out remaining walnut shell abrasive particles.
Inspect cleaned areas before reassembly.
Clean and store the equipment properly after use.

Use Notes

Do not blast if the target valves are not closed.
Seal all uncleaned manifold ports before cleaning.
Wear safety goggles and a respirator during operation.
Use a dryer filter with the compressor to reduce moisture buildup and media clumping.
After carbon removal, blow out remaining walnut shell abrasive before reassembly.

AUTOOL HTS728 multifunctional control panel operation image

AUTOOL HTS728 product storage handle and accessory detail image

AUTOOL HTS728 packing list and package contents

What Is In The Box

The packing list uses one most relevant package image only. Check the package image to confirm the HTS728 main unit, hoses, spray gun, adapters, nozzles, connectors, safety goggles, manual, and accessories before use.

Main UnitAUTOOL HTS728 walnut blasting machine

Adapters And Nozzles5 vehicle adapters and blasting nozzles shown in the package image

Hoses And ConnectorsRecovery hose, transparent hose, elbow connectors, blasting hose, and connection parts shown in the package image

Safety And ManualSafety goggles and user manual shown in the package image

Walnut MediaWalnut media bags are shown in the package image; final media quantity may vary by SKU, so confirm before ordering if needed

Setup RequirementExternal compressor required; use 0.4-0.6mm walnut media and do not load more than 3.5KG during use

Product Comparison

Compare HTS728 with related AUTOOL walnut blaster models before choosing the right machine for combustion chamber cleaning, intake and valve cleaning, power output, compressor setup, connector needs, and budget.

Choose HTS728 IfYou need combustion chamber cleaning, 0.4-0.6mm fine walnut abrasive, intake manifold cleaning, intake / exhaust valve cleaning, HEPA recovery, and professional workshop efficiency.

HTS678 FocusHTS678 offers 1500W rated power, HEPA filter, telescoping handle, Standard / Expert Mode, pressure knob control, and pressure gauge. Choose it if you need those operating modes but do not need HTS728 combustion chamber support.

HTS518 FocusHTS518 supports High / Low Mode and Low-Speed Mode for different applications, making it suitable when operating modes are more important than combustion chamber cleaning.

HTS558 / HTS559 FocusHTS558 is the basic walnut blaster option. HTS559 upgrades to 1400W and a larger 30L main unit capacity for better efficiency and durability.

Decision CheckCompare media size, power, capacity, external compressor requirements, operating modes, connector count, pressure regulation, filtration, and cleaning areas before ordering.

AUTOOL walnut blasting machine model comparison chart

AUTOOL HTS728 User Manual

Open the PDF manual for detailed operation, media loading, recovery mode, combustion chamber cleaning, and safety guidance.

Download Manual

Need Setup Confirmation?

Contact AUTOOL Store before ordering or operating if you need to confirm media size, compressor setup, dryer filter, port sealing, combustion chamber cleaning, replacement parts, or media purchase.

Emailsupport@autoolstore.com WhatsApp+86 189 2647 7404

Before You Order And Use

Use the correct abrasive size, loading amount, air pressure, PPE, valve position, and cleaning sequence to protect the vehicle and ensure effective carbon removal.

Walnut Blaster Usage Tips

Use 0.4-0.6mm walnut shell abrasive for HTS728.
Do not add more than 3.5KG of walnut sand during use.
Use an external compressor that meets the specification: air pressure above 0.7MPa and airflow above 0.4m³/min.
Use an air compressor with a dryer filter to prevent moisture buildup, walnut media clumping, and weak blasting performance.
Wear safety goggles during operation.
A respirator is recommended because fine walnut shell dust may affect breathing.
Clean each manifold port for about 2 minutes, then stop and check the cleaning result.
Seal all uncleaned manifold ports before cleaning.
Do not clean a manifold port if the valves are not closed.
Rotate the crankshaft to close the valves before combustion chamber blasting.
After carbon removal, use an air blow gun to blow out remaining walnut shell abrasive particles.
Under normal conditions, walnut shell abrasive can be reused 5-10 times.
Use original or compatible replacement parts and media to avoid performance loss or machine damage.

Questions And Answers

These answers cover walnut blasting basics, HTS728 media size, air compressor requirements, safe engine use, combustion chamber cleaning, cleaning intervals, PPE, residual abrasive removal, and replacement parts.

What Is A Carbon Cleaning Walnut Blaster?

How Does A Walnut Blasting Machine Work?

What Walnut Sand Size Should I Use For HTS728?

How Much Walnut Sand Can I Add?

What Air Compressor Is Required?

Can HTS728 Clean The Combustion Chamber?

Is Walnut Blasting Safe To Use On All Types Of Engines?

Are There Any Risks When Using A Walnut Blasting Machine?

How Often Should I Use A Walnut Blaster For Intake Manifold And Valve Cleaning?

Are Replacement Parts And More Media Available?

Related Guides

Use these related articles to understand walnut shells, dry ice vs walnut blasting, and HTS728 engine carbon cleaning applications.

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Warranty And Contact

For HTS728 setup support, walnut media size confirmation, compressor / dryer filter confirmation, combustion chamber cleaning, intake manifold / valve cleaning guidance, replacement parts, media support, or troubleshooting, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming 0.4-0.6mm walnut media, 3.5KG loading limit, >0.7MPa air pressure, >0.4m³/min airflow, dryer filter setup, port sealing, valve closure, combustion chamber cleaning, residual abrasive removal, replacement parts, or walnut media purchase.

3-year warranty for eligible non-human damage cases
HTS728 setup and operation support
Walnut media size and replacement media confirmation
Air compressor, airflow, and dryer filter confirmation
Combustion chamber, intake manifold, and valve cleaning guidance
Troubleshooting support for blasting, recovery, sealing, and residual abrasive removal

Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

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