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AUTOOL HTS518 Walnut Blasting Machine for Intake Valve Cleaning
US$539.00
Key Features
- Cleaner Blasting Workflow
- 23-Adapter Port Coverage
- Intake Valve Carbon Removal
- 30L Workshop Design
- Cleaner Blasting Workflow: Simultaneous walnut blasting, vacuum recovery, and dust filtration help contain abrasive and carbon residue for less scattered media and easier cleanup.
- 23-Adapter Port Coverage: 23 intake adapters support a wider range of intake-port shapes, helping simplify connection and sealing before blasting.
- Intake Valve Carbon Removal: Designed to remove stubborn deposits from intake passages and the backside of intake valves.
- 30L Workshop Design: A 30L main unit with rear storage, telescoping handle, and 360° casters keeps accessories organized and the machine easy to move.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL HTS518 · 1400W Walnut Shell Blasting Machine
Broad Intake-Port Coverage with Integrated Recovery
The AUTOOL HTS518 is a 1400W walnut shell blasting machine for removing stubborn carbon deposits from the intake pipe and the backs of the intake valves. It combines walnut abrasive blasting, vacuum recovery, dust filtering, 23 intake adapters, a 30L tank, and a trolley-style body for workshop intake valve carbon cleaning. An external high-pressure air compressor and compatible 0.6–1.2 mm walnut abrasive are required.
- 1400W Rated Power
- 30L Main Unit Capacity
- 23 Intake Adapters
- 0.6–1.2 mm Walnut Abrasive
Best for: workshops cleaning intake pipes and the backs of intake valves with simultaneous walnut blasting and media recovery.
23 Intake Adapters
Key Features
HTS518 brings together the core functions expected from professional walnut blasting equipment: intake-port adapter coverage, simultaneous spraying and recovery, dust-filter media management, intake carbon removal, workshop mobility, 1400W rated power for vacuum recovery, and multiple operating modes.
23 Intake Adapters — Broader Intake-Port Coverage
The 23-adapter set supports multiple intake-port shapes for broader vehicle compatibility. Match the adapter to the specific engine and intake-port shape before cleaning.
Spray And Vacuum Recovery Together
The integrated design sprays walnut abrasive and recovers it by vacuum at the same time, helping reduce scattered media during cleaning.
Built-In Dust Filter for Recovered Media and Carbon Residue
The built-in dust filter helps manage collected walnut abrasive and carbon residue during recovery. Reuse recovered abrasive only when the service procedure for the specific vehicle permits it and the media remains suitable for reuse.
Deep Intake Carbon Removal
Helps remove sticky carbon deposits from the intake manifold area and the backs of the intake valves, leaving the cleaned surfaces visibly cleaner. Results vary with the vehicle condition, diagnosis, and the service performed.
Workshop-Friendly Body
A rear storage box, three-section telescoping handle, and 360° swivel casters help organize adapters and move the unit around the service area.
1400W Rated Power For Vacuum Recovery
The machine is rated at 1400W and supports vacuum recovery, while the external air compressor delivers the blasting force for walnut-shell cleaning.
High/Low Mode and Low-Speed Mode
HTS518 includes High/Low Mode and Low-Speed Mode.
Walnut Media Recovery & Reuse
The recovery and filtration system helps separate collected walnut-shell abrasive from carbon residue so suitable media can be reused. Under normal conditions, walnut-shell abrasive can be reused 5–10 times. Keep the media dry and replace it if it becomes contaminated, clumped, or cleaning performance drops.
3-Year Main Unit Warranty
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
From Setup to Final Vehicle Check
Step-by-Step Workflow
HTS518 uses a closed-loop walnut shell blasting process: abrasive impact loosens carbon deposits while vacuum recovery collects media and residue. The full service also includes intake access, valve-position confirmation, inspection, residual-media recovery, reassembly, final leak checks, diagnostic scanning, and a functional vehicle check.
01
Step 1
Add Walnut Abrasive
Open the head cover and add about 2–4 kg of compatible 0.6–1.2 mm walnut abrasive. Keep the media dry and free of clumps.
- Add 2–4 kg of compatible 0.6–1.2 mm walnut abrasive.
- Keep the media dry and free of clumps.
02
Step 2
Connect Gun And Recovery Hose
Connect the spray gun and recovery hose so the blasting nozzle stays within the recovery path.
- Connect the spray gun.
- Connect the recovery hose.
- Keep the blasting nozzle within the recovery path.
03
Step 3
Prepare The Intake Port
Remove the intake manifold when needed to access the target intake port, then rotate the crankshaft until the target intake valve is closed before blasting. Isolate the other intake openings according to the service procedure for the specific vehicle.
- Access the target intake port.
- Close the target intake valve before blasting.
- Isolate the other intake openings as required by the vehicle service procedure.
04
Step 4
Connect Dry Air And Power
Connect the external high-pressure air compressor and AC power. Use stable, dry, filtered air; the compressor is required and is not included.
- Connect the external high-pressure air compressor.
- Connect AC power.
- Use stable, dry, filtered air.
05
Step 5
Blast And Recover
The external compressor drives walnut abrasive through the blasting gun while the vacuum-recovery path collects abrasive and removed residue. The blasting step takes approximately 1–3 minutes per intake port, depending on the amount of carbon buildup.
- Blast and recover at the same time.
- Allow approximately 1–3 minutes per intake port, depending on carbon buildup.
06
Step 6
Inspect And Repeat Port By Port
Stop and inspect the cleaned port before moving on. Clean one intake port at a time and repeat only as needed for the observed deposit condition.
- Inspect the cleaned port before moving on.
- Clean one intake port at a time.
- Repeat only as needed for the observed deposit condition.
07
Step 7
Final Recovery And Vehicle Check
Recover any visible abrasive, inspect the port with adequate lighting or a borescope, remove the tools and adapters, reinstall the intake components, then complete leak checks, a diagnostic scan, and a final functional check before returning the vehicle to service.
- Recover any visible abrasive.
- Inspect the port with adequate lighting or a borescope.
- Remove tools and adapters, then reinstall the intake components.
- Complete leak checks, a diagnostic scan, and a final functional check.
Before You Start
Safety & Compatibility
Before operating HTS518, check the air source, walnut abrasive, cleaning target, intake-valve position, adapter seal, required personal protective equipment (PPE), and final residual-media inspection steps. Always follow the service procedure for the specific vehicle when it differs from general product guidance.
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 dry, filtered air. Moisture may cause walnut-shell media to clump and reduce feed consistency.
Air Pressure Guidance
Use an external compressor with air pressure up to 0.7 MPa; 6 bar or more is generally recommended for operation. Also make sure the compressor provides sufficient continuous airflow and that the air tank, hose, quick-connect fittings, and pressure settings are suitable for the vehicle and workshop setup.
Compatible Walnut Abrasive
Use compatible 0.6–1.2 mm walnut-shell abrasive for HTS518. Add about 2–4 kg of compatible walnut abrasive. Walnut abrasive is not included.
Intake System Cleaning Scope
HTS518 is designed for carbon cleaning in the engine intake pipe and on the backs of the intake valves. It is not designed for fuel injectors, cylinders, or combustion-chamber cleaning.
Adapter Fit and Sealing
The supplied 23-adapter set covers multiple intake-port shapes, but the adapter still needs to match the specific engine and port geometry. Before blasting, confirm that the selected adapter matches the engine port geometry, seals correctly, and does not interfere with surrounding components.
Valve Position And Port Isolation
Start blasting only after confirming that the target intake valve is fully closed. Clean one intake port at a time and isolate the other openings according to the service procedure for the specific vehicle.
Residual Media Inspection
Before starting the engine, vacuum out the remaining abrasive and inspect the cleaned area to make sure no visible media remains. Do not rely on residual media simply burning away.
Protective Equipment and Walnut-Media Safety
Use suitable eye and respiratory protection, good ventilation, and the walnut-media supplier Safety Data Sheet (SDS). Walnut-shell media can create dust and may present allergen concerns.
Walnut Abrasive Reuse
The machine can collect used abrasive; reuse it only when the service procedure for the specific vehicle permits it and the recovered media remains suitable for reuse.
Compare models
Compare AUTOOL Walnut Blaster Models
Use this table to compare key specifications and feature differences across the AUTOOL walnut blasting models.
Compare models
Choose one or more models. HTS518 is selected by default.
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| Specification | ModelAUTOOL HTS558 | ModelAUTOOL HTS559 | ModelAUTOOL HTS518 | ModelAUTOOL HTS678 | ModelAUTOOL HTS728 |
|---|---|---|---|---|---|
| Core operation | |||||
| Cleaning Method | Walnut Shell Blasting | Walnut Shell Blasting | Walnut Shell Blasting | Walnut Shell Blasting | Walnut Shell Blasting |
| Input Voltage | 110/220 V | 110/220 V | 110/220 V | 110/220 V | 110/220 V |
| Rated Frequency | 50/60 Hz | 50/60 Hz | 50/60 Hz | 50/60 Hz | 50/60 Hz |
| Rated Power | 1200 W | 1400 W | 1400 W | 1500 W | 1400 W |
| Vacuum Suction | 0.02 MPa | 0.02 MPa | 0.02 MPa | 0.02 MPa | >0.7 MPa |
| Airflow | <300 L/min (<0.3 m³/min) | <300 L/min (<0.3 m³/min) | <300 L/min (<0.3 m³/min) | <300 L/min (<0.3 m³/min) | >400 L/min (>0.4 m³/min) |
| Walnut Shell Abrasive Size | 0.6–1.2 mm | 0.6–1.2 mm | 0.6–1.2 mm | 0.6–1.2 mm | 0.4–0.6 mm |
| Main Unit Capacity | 13 L | 30 L | 30 L | 10 L | 10 L |
| Product Weight | 10 kg | 12 kg | 23.5 kg | 52 kg | 50 kg |
| Adapter Types | 5 Types | 5 Types | 23 Types | 23 Types | 5 Types |
| Workshop hardware | |||||
| External Air Compressor Required | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Storage Box | ×Not included | ×Not included | ✓Included | ✓Included | ×Not included |
| Pressure Gauge | ×Not included | ×Not included | ×Not included | ✓Included | ✓Included |
| Pressure Settings | ×Not included | ×Not included | ×Not included | Pressure Regulation Knob | Pressure Regulation Knob |
| Modes & filtration | |||||
| Mode Switch | ×Not included | ×Not included | High/Low Mode; Low-Speed Mode | Standard Mode; Expert Mode | Recovery Mode; Filling Mode |
| Built-In Dust Filter | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| HEPA (High-Efficiency Particulate Air) Filter | ×Not included | ×Not included | ×Not included | ✓Included | ✓Included |
| Cleaning scope & mobility | |||||
| Combustion-Chamber Cleaning | ×Not included | ×Not included | ×Not included | ×Not included | ✓Included |
| 360° Swivel Casters | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Three-Section Telescoping Handle | ×Not included | ×Not included | ✓Included | ✓Included | ×Not included |
Model guide
Review the main differences below, then select models above for a side-by-side comparison.
AUTOOL HTS558
A lighter 13L walnut blasting model with five configured adapter types and built-in dust filtering.
AUTOOL HTS559
Keeps 1400W power and a 30L capacity, with five configured adapter types and no storage box.
AUTOOL HTS518
Current model: 1400W, 30L capacity, 23 configured adapter types, storage box, and telescoping handle.
AUTOOL HTS678
Adds 1500W rated power, 23 adapter types, a pressure gauge, pressure regulation, HEPA filtration, and storage.
AUTOOL HTS728
Adds combustion-chamber cleaning capability, HEPA filtration, pressure regulation, and higher airflow.
Included & Not Included
Package Contents
The HTS518 package includes the main unit and accessories listed below. Walnut abrasive and the external high-pressure air compressor are not included.
- Main UnitAUTOOL HTS518 Walnut Shell Blasting Machine
- Adapters23 intake adapters
- ProtectionProtective goggles
- Cleaning ToolsWalnut shell blasting gun and black pipe adapters
- Recovery HoseFlexible recovery hose
- Not IncludedWalnut abrasive and external high-pressure air compressor
Downloads & Help
Manual & Support
Find setup, operating, maintenance, and package information below, or contact support for help with adapter and air-source setup.
AUTOOL HTS518 Manual PDF
Open the PDF manual for product structure, setup guidance, operating steps, and maintenance notes.
Product, Setup & Service Answers
Frequently Asked Questions
Find answers about walnut abrasive, carbon buildup, cleaning scope, air-compressor setup, abrasive reuse, model selection, package contents, and support.
How Does HTS518 Clean Carbon From Intake Valves?
HTS518 uses walnut blasting on the backs of intake valves and intake-port surfaces to loosen hard carbon deposits, while vacuum recovery collects spent media and carbon residue. Cleaning should follow the service procedure for the specific vehicle.
What Is Walnut Sand?
Walnut abrasive, often called walnut sand, is made from crushed walnut shells screened and classified by size. For HTS518, use compatible 0.6–1.2 mm walnut abrasive. Walnut-shell media can create dust and may present allergen concerns. Follow the media Safety Data Sheet (SDS) and use appropriate personal protective equipment (PPE).
What Walnut Abrasive Size Should I Use?
Use 0.6–1.2 mm walnut-shell abrasive for HTS518 and add about 2–4 kg. Keep the media dry and free of clumps.
Is Walnut Abrasive Included In The Package?
No. Walnut abrasive is not included; prepare compatible 0.6–1.2 mm media separately before using HTS518.
What Air Compressor Does HTS518 Need?
HTS518 requires an external high-pressure air compressor, which is not included. Use an external compressor with air pressure up to 0.7 MPa; 6 bar or more is generally recommended for operation. Use stable, dry, filtered air with sufficient continuous airflow, and make sure the hose, quick-connect fittings, and pressure settings suit the workshop setup.
Can HTS518 Clean Injectors, Throttle Valves, Cylinders, Or Combustion Chambers?
No. HTS518 is designed to clean the intake pipe and the backs of the intake valves, not injectors, throttle valves, cylinders, or combustion chambers. Use a dedicated injector-cleaning tool for injectors.
Can HTS518 Remove Carbon Buildup on Intake Valves?
HTS518 is designed to remove carbon buildup from the backs of intake valves and intake-port surfaces when inspection confirms deposits and the service procedure for the specific vehicle supports walnut blasting. Match the adapter and cleaning procedure to the specific engine before service.
When Should Intake Carbon Deposits Be Cleaned?
Clean intake-valve and intake-port deposits when inspection or diagnosis shows significant buildup and the vehicle service procedure supports mechanical cleaning. Do not use one fixed mileage interval for all vehicles, and do not expect a guaranteed improvement in power, fuel economy, or drivability.
How Long Does Cleaning Take?
The blasting step takes approximately 1–3 minutes per intake port, depending on the amount of carbon buildup. Total service time also includes access/disassembly, valve-position confirmation, adapter setup, cleanup, residual-media inspection, reassembly, final leak checks, diagnostic scanning, and a functional vehicle check.
Can Walnut Abrasive Be Reused?
Reuse walnut abrasive only when the service procedure for the specific vehicle permits it and the recovered media remains suitable for reuse. There is no fixed reuse count that applies to every vehicle or procedure; some procedures require fresh abrasive. Control moisture, clumping, and contamination whenever reuse is permitted.
Where Can I Compare HTS558, HTS559, HTS518, HTS678, And HTS728?
Use the AUTOOL Walnut Blaster Model Comparison table above to compare rated power, capacity, adapters, filters, modes, pressure controls, and combustion-chamber capability across HTS558, HTS559, HTS518, HTS678, and HTS728.
What Should I Check Before Starting The Engine After Cleaning?
Before restarting the engine, confirm that the target intake valve was closed during blasting, vacuum out remaining abrasive, inspect the port with adequate lighting or a borescope, remove the tools and adapters, reinstall the components, then complete leak checks, a diagnostic scan, and a final functional check.
What Accessories Are Included?
The package includes the HTS518 main unit, 23 intake adapters, protective goggles, sandblasting gun, black pipe adapters, and recovery hose. Walnut abrasive and the external high-pressure air compressor are not included. See the Packing List image for a visual reference.
How Long Is The Warranty?
The main unit includes a 3-year warranty, and standard accessories include a 1-year warranty. See the Warranty Policy for regional coverage, eligibility, and exclusions before purchase.
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