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AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  1. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  2. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  3. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  4. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  5. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  6. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  7. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  8. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  9. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  10. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  11. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
  12. AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash

AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash

US$539.00

Key Features
  • Intake Cleaning
  • 1400W Suction
  • Reusable Media
Key Features
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AUTOOL HTS518

Product Overview

The AUTOOL HTS518 is a 1400W walnut shell blasting machine for removing stubborn carbon deposits from the intake pipe and the backside of intake valves. It combines walnut abrasive blasting, vacuum recovery, dust filtering, 23 intake adapters, a 30L tank, and a trolley-style body to help workshops clean carbon buildup more efficiently.

1400W Power 30L Capacity 23 Adapters External Air Required
0.6-1.2mmWalnut Abrasive
2-4kgSuggested Fill
1-3 minPer Cleaning
3 YearsWarranty Support
AUTOOL HTS518 walnut sand de-carbon cleaner main product image with EU and US plug options Click to enlarge
Before You Order And Use

Before You Order And Use

Confirm the abrasive, air compressor, cleaning range, intake valve position, and reuse rules before ordering or operating the walnut blaster.

External Air Compressor Required

HTS518 needs an external high-pressure air compressor for blasting. The air compressor is not included in the package.

Use Dry Filtered Air

Use an air compressor with stable pressure and a dryer filter when possible. Moisture may cause walnut shell media to clump and reduce blasting performance.

6 Bar Or Above Recommended

The original air compressor configuration calls for up to 0.7MPa and generally 6 bar or more. Always follow safe workshop and vehicle service limits.

Walnut Sand Not Included

Walnut shell abrasive is not included. Prepare 0.6-1.2mm walnut abrasive before use, or purchase compatible walnut sand separately.

Intake System Only

HTS518 is designed for the engine intake pipe and intake valve backside. It is not for injector, throttle valve, cylinder, or combustion chamber cleaning.

Clean Port By Port

Close the intake valve before blasting. Clean one intake port each time; a 6-cylinder engine should be cleaned six times, one port at a time.

Safety And Media Reminders

  • High-precision intake systems, such as BMW Valvetronic systems, are sensitive to foreign matter. Make sure the intake valve is closed and visible media is recovered before restarting the engine.
  • Walnut powder is a natural polishing material with hardness lower than metal but higher than carbon deposits, helping remove buildup without damaging the metal surface when used correctly.
  • Small residual walnut powder may burn to ash after the engine starts, but visible media should still be recovered and the intake should be checked before startup.
  • Chemical cleaning agents may corrode pipes or shorten service life if used improperly; walnut blasting avoids soaking the intake with chemical fluid.
Key Features

Key Features

HTS518 focuses on intake carbon removal, simultaneous spraying and recovery, reusable walnut abrasive separation, adapter coverage, and workshop mobility.

1400W Strong Suction

The 1400W motor provides strong vacuum recovery while the external air source delivers blasting force for carbon deposit removal.

Deep Intake Carbon Removal

Helps remove sticky carbon deposits from the intake manifold area and intake valve backside, supporting better airflow and smoother engine operation.

Spray And Recovery Together

The integrated design allows walnut grit to be sprayed and recovered simultaneously, reducing scattered media during the cleaning process.

Built-In Dust Filter

The internal filter separates recovered walnut sand grit from carbon deposits so the abrasive can be reused when the condition allows.

23 Intake Adapters

The 23-adapter set improves fitment coverage for many intake port shapes, including common applications for BMW, Volkswagen, Mercedes-Benz, GM, Volvo, Nissan, Toyota, Honda, Audi, and more.

Workshop-Friendly Body

A rear storage box, three-section telescoping handle, and 360° swivel casters make it easier to store adapters and move the unit around the service area.

AUTOOL HTS518 before and after car de-carbon cleaning result Click to enlarge
AUTOOL HTS518 deep removal of intake carbon deposits before and after Click to enlarge
AUTOOL HTS518 built-in dust filter separates walnut sand grit from carbon deposits Click to enlarge
AUTOOL HTS518 integrated design sprays and recovers walnut sand grit simultaneously Click to enlarge
AUTOOL HTS518 23 intake adapters for multiple vehicle applications Click to enlarge
AUTOOL HTS518 telescopic rod and caster design for easy movement Click to enlarge
How It Works

How It Works

HTS518 uses a closed-loop walnut shell blasting process: abrasive impact loosens carbon deposits, while vacuum recovery collects media and residue for filtering.

Close The Intake Valve

Before blasting, turn the crankshaft to close the intake valve for the port being cleaned. This helps keep media out of the combustion area.

Spray Walnut Abrasive

The external air compressor drives walnut powder through the blasting gun into the intake port, where repeated impact breaks down hard carbon deposits.

Recover Through Vacuum

The recovery hose collects walnut powder and removed carbon residue during cleaning, helping keep the process controlled and cleaner.

Separate And Reuse

The built-in filter separates carbon residue from walnut abrasive. Under normal conditions, the abrasive can usually be reused 5-10 times.

Compatibility And Fitment

Compatibility And Fitment

Use the correct walnut shell abrasive size and confirm the cleaning target before service. HTS518 is for intake pipe and intake valve backside carbon cleaning only.

0.6-1.2mm Walnut Sand

Use walnut shell abrasive between 0.6-1.2mm. Walnut sand is made from crushed walnut shells and screened by particle size.

Natural Abrasive Material

Walnut sand has strong wear resistance, pressure resistance, and a microporous surface. It provides good adsorption while avoiding corrosion or pollution when used correctly.

Reusable 5-10 Times

The abrasive can usually be reused 5-10 times under normal conditions. Replace it earlier if it is wet, clumped, contaminated, or no longer cleans effectively.

Broad Adapter Coverage

The 23-adapter kit is designed for many intake port shapes and helps support common vehicle brands and engine layouts.

Not For Injectors

Do not use HTS518 to clean fuel injectors. Choose an AUTOOL fuel injector cleaner if injector cleaning is required.

Not For Combustion Chambers

HTS518 does not support engine combustion chamber cleaning. For that requirement, compare the HTS728 model instead.

How To Use

How To Use

Follow the basic operating sequence below, then verify the intake port is clean and media is recovered before moving to the next cylinder.

Add Walnut Powder

Open the head cover, pour in 2-4kg of 0.6-1.2mm walnut powder, press the dust guard firmly onto the walnut powder, and close the cover securely.

Connect Gun And Recovery Hose

Join the spray gun muzzle and the recovery hose together. The recovery hose has an opening designed for the blasting nozzle and vacuum path.

Prepare The Intake Port

Remove the intake manifold, insert the spray gun into the intake port, and turn the crankshaft to close the intake valve for the port being cleaned.

Connect Air And Power

Connect the external high-pressure air compressor to HTS518, then connect AC power. The air compressor is required and is not included.

Clean And Inspect

Start cleaning for about 1-3 minutes depending on carbon buildup. Stop the machine, inspect the result, recover remaining media, and repeat for the next intake port if needed.

Use Notes

  • Do not start blasting until the target intake valve is closed.
  • Clean one intake pipe or intake port each time.
  • The cleaning process normally lasts 1-3 minutes, depending on the carbon deposition condition.
  • Walnut powder can usually be reused 5-10 times, depending on contamination and moisture.
  • Use a dryer filter on the air compressor to prevent walnut sand from clumping.
  • Check for visible walnut media before starting the engine after cleaning.
Specifications

AUTOOL HTS518 Product Specifications

HTS518 is a 30L, 1400W walnut shell blasting machine with vacuum recovery, 23 adapters, storage box, 360° casters, and a three-section telescoping handle.

Core Specifications
ProductAUTOOL HTS518 Walnut Sand De-Carbon Cleaner
Working PrincipleWalnut shell blasting with vacuum recovery
ApplicationsIntake pipe and intake valve backside carbon cleaning
Input Voltage110V / 220V
Rated Frequency50 / 60Hz
Rated Power1400W
Vacuum Suction0.02MPa
Air Flow<300L/min (<0.3 m³/min)
Main Unit Capacity30L
Product Weight23.5kg
Package Dimensions520 × 520 × 890mm
Media And Compressor
Walnut Shell Abrasive Size0.6-1.2mm
Suggested Fill Amount2-4kg walnut powder
Abrasive ReuseUsually 5-10 times under normal conditions
External Air CompressorRequired; not included
Recommended Air SetupDry-filtered air, generally 6 bar or above
Design And Functions
Configured Connectors23 types
Storage BoxYes
Pressure GaugeNo
Pressure SettingsNo pressure regulation knob
Mode SwitchHigh / Low Mode and Low-Speed Mode
Built-In Dust FilterYes
HEPA FilterNo
Engine Combustion Chamber CleaningNo
360° Swivel CasterYes
Three-Section Telescoping HandleYes
AUTOOL HTS518 specifications and product structure diagram Click to enlarge
Core Specifications
ProductAUTOOL HTS518 Walnut Sand De-Carbon Cleaner
Working PrincipleWalnut shell blasting with vacuum recovery
ApplicationsIntake pipe and intake valve backside carbon cleaning
Input Voltage110V / 220V
Rated Frequency50 / 60Hz
Rated Power1400W
Vacuum Suction0.02MPa
Air Flow<300L/min (<0.3 m³/min)
Main Unit Capacity30L
Product Weight23.5kg
Package Dimensions520 × 520 × 890mm
Media And Compressor
Walnut Shell Abrasive Size0.6-1.2mm
Suggested Fill Amount2-4kg walnut powder
Abrasive ReuseUsually 5-10 times under normal conditions
External Air CompressorRequired; not included
Recommended Air SetupDry-filtered air, generally 6 bar or above
Design And Functions
Configured Connectors23 types
Storage BoxYes
Pressure GaugeNo
Pressure SettingsNo pressure regulation knob
Mode SwitchHigh / Low Mode and Low-Speed Mode
Built-In Dust FilterYes
HEPA FilterNo
Engine Combustion Chamber CleaningNo
360° Swivel CasterYes
Three-Section Telescoping HandleYes
AUTOOL HTS518 packing list with main unit adapters goggles sandblasting gun black pipe adapters and recovery hose Click to enlarge
What Is In The Box

What Is In The Box

The package includes the HTS518 main unit and accessories shown in the packing list image. Walnut sand and the external air compressor are not included.

Main UnitAUTOOL HTS518 walnut sand de-carbon cleaner
Adapters23 intake adapters shown in the packing list image
ProtectionProtective goggles shown in the package image
Cleaning ToolsSandblasting gun and black pipe adapters shown in the package image
Recovery HoseFlexible recovery hose shown in the package image
Not IncludedWalnut sand and high-pressure air compressor
Product Comparison

Product Comparison

Compare HTS518 with HTS558, HTS559, HTS678, and HTS728 before choosing the right walnut blasting machine for your workshop.

HTS518 Focus1400W, 30L capacity, 23 adapters, storage box, built-in dust filter, 360° caster, three-section telescoping handle, High/Low Mode, and Low-Speed Mode.
HTS558Basic model with 1200W power, 13L capacity, 5 connector types, built-in dust filter, and 360° caster.
HTS559Upgraded from HTS558 with 1400W power and 30L capacity, but still uses 5 connector types and has no storage box or mode switch.
HTS6781500W workshop model with 10L capacity, pressure gauge, pressure regulation knob, standard/expert mode, HEPA filter, storage box, and telescoping handle.
HTS728Expert-grade model using finer 0.4-0.6mm abrasive. It supports engine combustion chamber cleaning, pressure gauge, pressure regulation, HEPA filter, recovery mode, and filling mode.
Decision CheckChoose HTS518 if you need a 30L intake walnut blaster with 23 adapters and mode switching. Choose HTS728 if combustion chamber cleaning is required.
Comparison chart of AUTOOL HTS558 HTS559 HTS518 HTS678 and HTS728 engine carbon cleaning machines Click to enlarge
Related Products

Related Products

Compare related AUTOOL walnut shell blasting machines and compatible walnut sand before ordering. The walnut sand accessory is included here because HTS518 requires abrasive media for use.

Manual And Downloads

Manual And Downloads

Download the HTS518 manual for setup, walnut abrasive preparation, air compressor connection, operation, and safe-use instructions.

AUTOOL HTS518 walnut sand de-carbon cleaner user manual preview Click to enlarge

AUTOOL HTS518 Manual PDF

Open the PDF manual for product structure, setup guidance, operating steps, and maintenance notes.

Download Manual

Need Setup Confirmation?

Contact AUTOOL Store before ordering if you need to confirm air compressor requirements, walnut abrasive size, adapter compatibility, HTS518 versus HTS728 selection, or package contents.

Email[email protected] WhatsApp+86 189 2647 7404

Questions And Answers

These answers cover walnut sand, carbon deposition, cleaning range, air compressor setup, abrasive reuse, model selection, package contents, and support.

Related Guides

Related Guides

Read more about walnut shell carbon removal, walnut blasting versus dry ice blasting, and alternative engine cleaning methods.

AUTOOL dry ice blasting cleaner series guide image
Guide / 07-18-2025

Why Is Dry Ice Blasting So Expensive?

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 HTS518 model selection, walnut sand purchase, compressor setup, adapter confirmation, operation questions, package confirmation, or warranty support, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming whether HTS518 fits your intake cleaning requirement, whether HTS728 is better for combustion chamber cleaning, what walnut abrasive to buy, or how to connect the external air compressor.

  • 3-year warranty support for eligible non-human damage cases
  • Walnut abrasive size and purchase guidance
  • External air compressor and dryer filter confirmation
  • Adapter and vehicle intake compatibility confirmation
  • HTS558 / HTS559 / HTS518 / HTS678 / HTS728 model selection
  • Setup, operation, package, and accessory troubleshooting
Email Support[email protected] WhatsApp Support+86 189 2647 7404

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AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash
AUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon Wash

US$539.00

Select options This product has multiple variants. The options may be chosen on the product page Official Quote Request