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AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  1. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  2. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  3. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  4. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  5. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
  6. AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning

AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning

(4 customer reviews)

Price range: US$335.00 through US$2,399.00

Key Features
  • Carbon Deposit Cleaning
  • Closed-Loop Recovery
  • Adjustable Blasting Pressure
Key Features
☰ REQUEST BULK / B2B QUOTERequest B2B Quote
Secure checkoutFast supportBulk ready
AUTOOL HTS Series

Product Overview

The AUTOOL HTS walnut blaster series is designed for professional engine carbon cleaning with walnut shell media. It helps remove stubborn carbon deposits from intake ports, intake valves, exhaust valves, and supported target areas without relying on chemical cleaners. Choose the model by cleaning scope, HEPA filtration, pressure adjustment, media size, adapter coverage, and workshop workflow.

Walnut Blasting Intake Valve Cleaning External Air Source Model-Based Functions
HTS558 / HTS559Standard Cleaning
HTS518Storage Box Model
HTS678HEPA + Pressure
HTS728Combustion Chamber
AUTOOL HTS558 walnut blaster standard engine carbon cleaning machine Click to enlarge
AUTOOL HTS678 walnut shell blasting machine with pressure gauge and pressure adjustment knob Click to enlarge
AUTOOL HTS728 expert grade walnut sand combustion chamber de-carbon cleaner Click to enlarge
How To Choose

How To Choose

Start with the cleaning area first, then check HEPA filtration, pressure control, air compressor setup, walnut shell media size, and adapter coverage before choosing your model.

Need Standard Intake And Valve Cleaning?

Choose HTS558, HTS559, or HTS518 for intake manifold, intake port, and intake / exhaust valve carbon cleaning. These models are suitable for common walnut blasting workflows and do not support combustion chamber cleaning.

Need HEPA And Pressure Control?

Choose HTS678 if you need HEPA filtration, a pressure gauge, pressure adjustment, a storage box, 23 connector types, and standard / expert mode selection for workshop use.

Need Combustion Chamber Cleaning?

Choose HTS728. It is the expert-grade model in this series and the only model listed here that supports engine combustion chamber carbon cleaning.

Need The Right Walnut Media?

HTS558, HTS559, HTS518, and HTS678 use 0.6-1.2mm walnut shell abrasive. HTS728 uses finer 0.4-0.6mm walnut shell abrasive for more precise cleaning.

Need A Stable Air Source?

All models require an external air compressor. Use a suitable compressor according to the model manual; many setups use around 0.6-0.7MPa / 6-7bar. A dryer filter is recommended to reduce moisture and media clumping.

Need More Adapters Or Storage?

HTS518 and HTS678 include 23 connector types and a storage box. HTS558, HTS559, and HTS728 list 5 connector types, so confirm adapter needs before ordering.

Product Comparison

Product Comparison

Compare the HTS558, HTS559, HTS518, HTS678, and HTS728 before choosing the right cleaning range, filtration, pressure control, media size, connector set, storage design, and workflow mode.

HTS558 / HTS559Standard walnut blasting models for intake and valve carbon cleaning. They use 0.6-1.2mm media, have a built-in dust filter, 360° swivel casters, and no pressure gauge or pressure adjustment.
HTS518Uses 0.6-1.2mm media, includes 23 connector types, has a storage box, supports high / low mode and low-speed mode, and does not include a pressure gauge or pressure adjustment.
HTS678Recommended when HEPA filtration, pressure adjustment, pressure gauge monitoring, 23 connector types, storage box, and standard / expert mode are required.
HTS728Expert-grade model with HEPA filtration, pressure adjustment, pressure gauge, recovery / filling mode, finer 0.4-0.6mm media, and combustion chamber cleaning support.
Decision CheckCompare combustion chamber cleaning, HEPA filtration, pressure gauge, pressure settings, connector quantity, media size, main unit capacity, weight, mode switch, and air compressor setup before ordering.
Comparison chart for AUTOOL HTS558 HTS559 HTS518 HTS678 and HTS728 engine carbon cleaning machines Click to enlarge
Specifications

Specifications

Use this compact summary to check the main differences without reading the full comparison image. Do not treat higher-end functions as standard for the whole series.

Model Power / Capacity / Weight Media Size Connectors / Storage Pressure / Mode / HEPA Combustion Chamber
HTS558 1200W / 13L / 10kg 0.6-1.2mm 5 types / No storage box No pressure gauge, no pressure setting, built-in dust filter, no HEPA No
HTS559 1400W / 30L / 12kg 0.6-1.2mm 5 types / No storage box No pressure gauge, no pressure setting, built-in dust filter, no HEPA No
HTS518 1400W / 30L / 23.5kg 0.6-1.2mm 23 types / Storage box No pressure gauge, high / low mode and low-speed mode, built-in dust filter, no HEPA No
HTS678 1800W / 10L / 52kg 0.6-1.2mm 23 types / Storage box Pressure gauge, pressure regulation knob, standard / expert mode, built-in dust filter, HEPA filter No
HTS728 1400W / 10L / 50kg 0.4-0.6mm 5 types / No storage box Pressure gauge, pressure regulation knob, recovery / filling mode, built-in dust filter, HEPA filter Yes
HTS558 / HTS559
FocusStandard intake and valve carbon cleaning
Media0.6-1.2mm walnut shell abrasive
Pressure ControlNo pressure gauge or pressure adjustment
HEPANot supported
HTS518 / HTS678
Connectors23 types
Storage BoxSupported
Pressure ControlHTS678 supports pressure gauge and pressure regulation knob; HTS518 does not
HEPAHTS678 supports HEPA; HTS518 does not
HTS728
FocusExpert-grade carbon cleaning and combustion chamber support
Media0.4-0.6mm walnut shell abrasive
Pressure ControlPressure gauge and pressure regulation knob
ModeRecovery mode and filling mode
How It Works

How It Works

AUTOOL walnut shell blasters use compressed air to move walnut shell abrasive into the target cleaning area. The particles impact carbon deposits, while the connector and suction pipe recover loosened carbon and used walnut media into the storage tank. Combustion chamber cleaning applies to HTS728 only.

Compressed Air Blasting

An external air compressor drives walnut shell media at high speed through the blasting nozzle into the intake port, valve area, or supported target area.

Carbon Deposit Impact

Walnut particles tumble and impact carbon deposits, helping remove buildup without relying on chemical cleaning and while reducing the risk of damaging sensitive engine surfaces.

Simultaneous Recovery

The connector and suction pipe recover walnut shell abrasive and loosened carbon deposits into the machine, supporting cleaner operation and media reuse.

Key Features

Key Features

The HTS series focuses on professional carbon cleaning, adapter compatibility, external air source blasting, media recovery, workshop mobility, and model-based upgrades such as HEPA filtration, pressure adjustment, and combustion chamber support.

Intake And Valve Carbon Cleaning

Helps remove stubborn carbon deposits from intake manifolds, intake ports, intake valves, and exhaust valves according to the proper port-by-port cleaning sequence.

HTS728 Combustion Chamber Support

HTS728 supports combustion chamber carbon cleaning. This function is not supported by HTS558, HTS559, HTS518, or HTS678.

Multiple Intake Adapters

Different models include different connector quantities. HTS518 and HTS678 list 23 connector types, while HTS558, HTS559, and HTS728 list 5 connector types.

External Air Source Power

The series uses an external air compressor to provide the blasting air source for consistent walnut shell abrasive impact during carbon cleaning.

Dust Filter And Media Recovery

Built-in dust filtering and recovery help separate walnut shell abrasive from carbon deposits, allowing suitable media to be recycled and reused.

Workshop Mobility And Support

The HTS models include 360° swivel casters for workshop movement and are backed by 3-year warranty support for eligible non-human damage cases.

Product Details

Product Details

Walnut blasting performance depends on the correct media size, enough media loading, dry compressed air, and clean recovery. Use the correct media for each model and avoid moisture buildup.

Walnut Media Size

HTS558, HTS559, HTS518, and HTS678 use 0.6-1.2mm walnut shell abrasive. HTS728 uses 0.4-0.6mm walnut shell abrasive.

Media Loading

The walnut blaster requires about 2-3kg of walnut shell media to start operation. Do not run the cleaning process without enough media in the machine.

Media Reuse

Walnut media can usually be recycled and reused approximately 5-10 times depending on contamination, breakage, and recovery condition.

Dry Air Recommended

Use a dryer filter with the air compressor to reduce moisture buildup, walnut media clumping, nozzle blockage, and poor blasting performance.

Before You Order And Use

Before You Order And Use

Walnut blasting is effective for carbon cleaning, but valve position, port-by-port operation, compressed air quality, and application boundaries must be handled correctly before restarting the engine.

Close Intake Valves Before Cleaning

High-precision engine systems are sensitive to foreign particles in the intake manifold, including BMW Valvetronic systems. Turn off the engine and rotate the crankshaft to close the intake valves before cleaning each port.

Clean One Intake Port At A Time

The walnut sandblaster cleans one intake port at a time. For example, a six-cylinder engine requires each of the six intake ports to be cleaned individually.

External Air Compressor Required

The package does not include an air compressor. Use a suitable external compressor and add a dryer filter to reduce moisture, clumping, and unstable blasting.

Do Not Use For Car Chassis

Walnut sand blasting machines are not suitable for cleaning car chassis. Use a dry ice cleaning machine for chassis cleaning instead.

Additional Notes

  • Small residual walnut shell particles may turn to ash under high engine temperature after startup, but proper recovery and final inspection are still recommended before restarting the engine.
  • Use the correct walnut shell abrasive size for your model. Do not use HTS728 fine media assumptions for the whole HTS series.
  • Press the spray button intermittently during normal use for stronger cleaning power and better blasting results.
  • If walnut abrasive clumps or nozzle output becomes weak, check air moisture, dryer filter condition, media loading, and nozzle blockage first.
  • Combustion chamber cleaning is only supported by HTS728. Do not describe this as a full-series function.
Related Products

Related Products

Compare related AUTOOL HTS walnut blasting machines, walnut shell media, and adapter accessories before choosing the right cleaning scope, media size, filtration, pressure control, and workshop setup.

Questions And Answers

These answers cover model selection, combustion chamber cleaning, HEPA filtration, pressure adjustment, air compressor requirements, walnut media size, chassis cleaning limits, no-sandblast troubleshooting, spray gun switch replacement, recycling switch diagnosis, shipping wheel damage, and support requirements.

Related Guides

Related Guides

Use these related guides to understand HTS558 operation and walnut blasting use cases for intake and valve carbon cleaning.

Warranty And Contact

Warranty And Contact

For HTS518 / HTS558 / HTS559 / HTS678 / HTS728 model selection, walnut media size confirmation, air compressor and dryer filter setup, HEPA / pressure adjustment / combustion chamber cleaning questions, blasting nozzle clogging, spray gun switch replacement, recycling switch diagnosis, wheel logistics damage, or warranty support, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help choosing the right walnut blaster, confirming media size, checking air compressor requirements, choosing HEPA or pressure-adjustable models, troubleshooting no sand output, diagnosing recycling switch or motor issues, or replacing parts affected by shipping damage.

  • HTS518 / HTS558 / HTS559 / HTS678 / HTS728 model selection
  • Walnut media size, media loading, and media reuse confirmation
  • Air compressor and dryer filter confirmation
  • HEPA filtration, pressure adjustment, and combustion chamber cleaning selection
  • Blasting nozzle clog troubleshooting
  • Spray gun switch replacement support
  • Recycling switch and motor fault diagnosis support
  • Wheel logistics damage replacement support
  • 3-year warranty support for eligible non-human damage cases
Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

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AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning
AUTOOL Walnut Blasting Machine for Intake Valve Carbon Cleaning

Price range: US$335.00 through US$2,399.00

Add to cart This product has multiple variants. The options may be chosen on the product page