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AUTOOL HTS678 Walnut Blaster for Intake Valve Cleaning with 23 Adapters
Original price was: US$1,129.00.US$999.00Current price is: US$999.00.
Key Features
- Controlled Blasting Setup
- 23-Adapter Port Coverage
- HEPA-Filtered Recovery
- Mobile Workshop System
- Controlled Blasting Setup: A pressure gauge, regulating knob, and Standard / Expert modes help operators monitor and adjust the blasting setup for different cleaning tasks.
- 23-Adapter Port Coverage: A 23-adapter set supports many intake-port shapes and workshop cleaning setups for broader hardware coverage.
- HEPA-Filtered Recovery: Simultaneous spray-and-vacuum recovery with dust and HEPA filtration helps manage walnut media, carbon residue, and fine particulate during cleaning.
- Mobile Workshop System: Built-in storage, a telescoping handle, and 360° casters keep accessories with the machine and make it easier to move between jobs.
- 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 HTS678 · Professional Walnut Sand Blaster
Adjustable Pressure for Controlled Blasting
The AUTOOL HTS678 is a professional walnut shell sand blaster with adjustable pressure control for controlled intake carbon cleaning. HTS678 features 1500W rated power, built-in recovery, Standard / Expert operating modes, 23 adapters, and a 10L main-unit capacity. An external compressed-air source and compatible walnut abrasive are required.
- Adjustable Pressure Control
- Standard / Expert Mode
- 23 Intake Adapters
- 0.6–1.2 mm Walnut Media
Best for: professional workshops that want adjustable pressure control, HEPA filtration, and 23 intake adapters for intake-side carbon cleaning.
23 Intake Adapters + Pressure Control
Key Features
HTS678 combines 23-adapter coverage, adjustable pressure and operating modes, simultaneous spray and recovery, HEPA filtration, intake-side carbon cleaning, workshop mobility, external-air blasting, and product support.
23 Adapters for Broad Intake-Port Coverage
The 23-adapter set supports multiple intake-port shapes and workshop cleaning setups. Match the adapter to the specific engine and intake-port shape before cleaning. The included adapter set fits multiple intake-port shapes, but it is not universal for every engine.
Integrated Spray And Vacuum Recovery
HTS678 sprays walnut abrasive and recovers it by vacuum at the same time, helping reduce scattered media and manual cleanup during intake carbon cleaning.
Built-In Dust Filter + HEPA Filtration
The built-in dust filter and HEPA filtration help manage collected walnut abrasive, carbon residue, and fine particulate during recovery. Recovered abrasive should be reused only when the vehicle service procedure permits it and the media remains suitable for reuse.
Adjustable Pressure Control
The pressure regulating knob and pressure gauge help users monitor and adjust blasting pressure for different intake cleaning tasks. Use pressure settings that match the HTS678 instructions, walnut media, air source, and vehicle service procedure.
Controlled Intake Valve Carbon Cleaning
With adjustable pressure control, walnut-shell abrasive helps remove carbon buildup from the intake pipe and the backs of intake valves, leaving the cleaned intake path visibly cleaner. Results vary with airflow, vehicle condition, diagnosis, and the service performed.
Standard Mode / Expert Mode
Choose Standard Mode or Expert Mode based on your experience and the cleaning task. Follow the HTS678 operating instructions when selecting Standard Mode or Expert Mode. Do not activate both modes at the same time.
Mobile Integrated Body
The three-section telescoping handle and 360° swivel casters make the machine easier to move around the workshop, while the storage-box configuration helps keep accessories with the unit.
1500W Rated Power + External Air Source
HTS678 is rated at 1500W for the machine system and built-in recovery, while an external air compressor provides the blasting force for walnut-shell cleaning.
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.
HTS678 Product Gallery
HTS678 Adjustable-Pressure Walnut Blasting Details
Explore HTS678 Standard / Expert modes, physical walnut-shell cleaning, the 1500W system, 10L media tank, adjustable pressure control, HEPA filtration and media recovery, before-and-after cleaning results, 23-adapter coverage, workshop mobility, specifications, and package contents.
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From Setup to Final Vehicle Check
Step-by-Step Workflow
HTS678 uses walnut-abrasive impact with simultaneous vacuum recovery. The sequence below covers setup, valve preparation, blasting, media recovery, residual-media inspection, reassembly, leak checks, diagnostic scanning, and a final vehicle check.
01
Step 1
Inspect And Prepare The Machine
Inspect the machine and organize the working setup before connecting hoses or loading walnut abrasive.
- Inspect the machine and accessories.
- Raise the telescoping rod as needed.
- Access the storage box as needed.
02
Step 2
Connect And Secure The Recovery Hose
A secure recovery-hose connection keeps the vacuum path stable during blasting.
- Connect the recovery hose.
- Secure the clamp.
03
Step 3
Choose And Seal The Adapter
Use an adapter that matches the intake-port shape and seals securely so blasting and recovery stay focused on the target port.
- Choose an adapter that matches the intake-port shape.
- Confirm a secure seal.
- Remember that the 23-adapter set is not universal for every engine.
04
Step 4
Check The Filter
Check the filter before loading walnut abrasive so the recovery system is ready for use.
- Inspect the filter cartridge.
- Make sure the lower screen is flat and correctly seated.
05
Step 5
Add Walnut Abrasive
Load the recommended amount of compatible walnut abrasive and keep it dry for consistent feeding.
- Load 3–5 kg of compatible 0.6–1.2 mm walnut abrasive.
- Keep the walnut abrasive dry.
- Follow the HTS678 loading instructions.
06
Step 6
Prepare The Vehicle
Prepare the target intake port before blasting by confirming valve position and isolating the other intake openings.
- Access the target intake port.
- Close the target intake valve.
- Clean one port at a time.
- Isolate the other intake openings according to the vehicle service procedure.
07
Step 7
Connect Dry Air and Select One Mode
Connect the air and power sources, then select one operating mode for the cleaning task.
- Connect dry, filtered external compressed air.
- Connect AC power.
- Select Standard Mode or Expert Mode according to the HTS678 instructions.
- Use only one mode at a time.
08
Step 8
Blast And Adjust Pressure Gradually
Start conservatively and adjust pressure gradually while monitoring the pressure gauge.
- Insert the blasting gun.
- Start at an appropriate setting.
- Use the pressure gauge and regulating knob to adjust pressure.
- Stay within the limits specified for the HTS678, walnut media, and vehicle service procedure.
09
Step 9
Recover And Inspect At The Same Time
Recover walnut abrasive while blasting, inspect the result, and repeat only where more cleaning is needed.
- Keep recovery active while blasting.
- Stop and inspect the result.
- Repeat only where more cleaning is needed.
10
Step 10
Final Vacuum, Purge And Vehicle Check
Finish by removing residual walnut abrasive, reassembling the intake, and completing the final vehicle checks.
- Stop the media flow and vacuum out remaining abrasive.
- Use an air purge when the HTS678 procedure calls for it.
- Inspect the cleaned area for residual media.
- Reassemble the intake.
- Complete leak checks, diagnostic scanning, and a final functional check.
Before You Start
Safety & Compatibility
Before using HTS678, check the external compressor, dry walnut abrasive, cleaning target, adapter seal, intake-valve position, selected operating mode, required personal protective equipment (PPE), and final residual-media recovery steps. Always follow the service procedure for the specific vehicle when it differs from general product guidance.
External Compressor Required
HTS678 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. Make sure it also provides sufficient continuous airflow and that the air tank, hose, quick-connect fittings, and duty cycle suit the blasting workflow.
Use Dry Filtered Air
Use dry, filtered compressed air. Moisture may cause walnut abrasive to clump or feed inconsistently; a dryer/water-separation setup is recommended.
Compatible Walnut Abrasive
The recommended fill is generally 3–5 kg of 0.6–1.2 mm walnut abrasive. Follow the HTS678 operating instructions for loading and use. Walnut abrasive inclusion may vary by selected package option; check the selected package contents before ordering.
Intake-Side Cleaning Scope
HTS678 is designed for intake-pipe and back-of-intake-valve cleaning. It is not designed for injectors, throttle valves, cylinders, or combustion chambers.
Adapter Match and Sealing
The 23-adapter set supports multiple intake-port shapes, but it is not universal for every vehicle. Before blasting, make sure the selected adapter fits the engine intake port, forms a secure seal, and does not interfere with surrounding components.
Valve Closure 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 other intake openings as required by the service procedure for the specific vehicle.
One Operating Mode At A Time
Use Standard Mode or Expert Mode according to the HTS678 operating instructions and the service procedure for the specific vehicle. Use only one operating mode at a time.
Protective Equipment and Walnut-Media Safety
Walnut-shell media can create dust and may trigger allergies. Wear suitable eye and respiratory protection, provide ventilation, and follow the walnut-media supplier Safety Data Sheet (SDS).
Walnut Abrasive Reuse
Reuse walnut abrasive only when the service procedure for the specific vehicle permits it and the recovered media remains suitable for reuse.
Residual Media Must Be Recovered
Remove visible residual walnut abrasive before starting the engine instead of relying on it to burn away. Before starting the engine, vacuum out the remaining abrasive and inspect the cleaned area to make sure no visible media remains.
Mechanical Cleaning and Chemical Cleaner Guidance
Chemical cleaners vary by product and application, and walnut blasting does not guarantee a specific vehicle-performance improvement. HTS678 is designed for intake-side carbon-deposit removal.
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. HTS678 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
1400W, 30L capacity, 23 configured adapter types, storage box, and telescoping handle.
AUTOOL HTS678
Current model: 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 package includes the HTS678 main unit and the accessories listed below. Walnut media may be included depending on the selected package option. The external air compressor is not included. Check the selected package contents before ordering.
- Main UnitAUTOOL HTS678 Walnut Sand Blaster
- Adapter Set23 adapters
- Blasting GunWalnut shell blasting gun
- Hoses And BendsRecovery hose and black bends
- Safety GogglesProtective goggles
- Walnut MediaWalnut media may be included depending on the selected package option
- Not IncludedExternal air compressor (high-pressure air source)
Downloads & Help
Manual & Support
Use the HTS678 manual for adapter selection, filter checks, walnut filling, mode operation, air setup, safety, and maintenance. Contact support for package or troubleshooting questions.
AUTOOL HTS678 User Manual
Open the PDF manual for HTS678 installation, operation, maintenance, and safety guidance.
Product, Setup & Service Answers
Frequently Asked Questions
Find answers about walnut abrasive, carbon buildup, compressor requirements, cleaning range, package contents, HTS678 / HTS728 differences, operation notes, and warranty support.
How Does Walnut Sandblasting Work with HTS678?
HTS678 uses processed walnut-shell abrasive as the blasting medium. External compressed air drives the abrasive across the target intake surface, while the recovery system collects spent media and loosened carbon. Use compatible 0.6–1.2 mm walnut abrasive, follow the media Safety Data Sheet (SDS), and wear appropriate personal protective equipment (PPE).
Can HTS678 Remove Carbon Buildup on Intake Valves?
HTS678 is designed to remove carbon buildup from supported intake-valve and intake-port surfaces when inspection confirms deposits and the service procedure for the specific vehicle supports walnut blasting. Use the correct adapter, pressure setting, and recovery procedure for the specific engine.
When Should Intake Carbon Deposits Be Cleaned?
Clean intake deposits when inspection or diagnosis confirms significant buildup and the vehicle procedure supports mechanical cleaning. Do not use one fixed mileage interval for all vehicles, and do not expect a guaranteed improvement in output, fuel economy, acceleration, or idle quality.
What Air Compressor Does HTS678 Need?
Use an external compressor with air pressure up to 0.7 MPa; 6 bar or more is generally recommended. Also make sure the compressor provides sufficient continuous airflow and dry air, and that the air tank, hose, quick-connect fittings, and pressure settings suit the vehicle and workshop setup.
Is The Air Compressor Included?
No. The external air compressor (high-pressure air source) is not included and must be prepared separately.
Is Walnut Media Included in the Package?
Walnut media inclusion depends on the selected package option. Check the selected package contents before ordering.
How Much Walnut Shell Abrasive Should I Add?
The recommended fill is generally 3–5 kg of 0.6–1.2 mm walnut abrasive for HTS678. Keep the walnut abrasive dry and follow the HTS678 operating instructions for loading and use.
How Does HTS678 Clean Carbon From Intake Valves?
HTS678 cleans carbon from the backs of intake valves one port at a time using walnut blasting, adjustable pressure control, and integrated recovery. Before blasting, make sure the target intake valve is fully closed and isolate the other intake openings according to the service procedure for the specific vehicle.
Can HTS678 Clean Injectors, Throttle Valves, Cylinders, Or Combustion Chambers?
No. HTS678 is designed for intake-pipe and back-of-intake-valve cleaning—not injectors, throttle valves, cylinders, or combustion chambers. Use a tool and cleaning procedure specifically designed for those other cleaning tasks.
Where Can I Compare HTS678 and HTS728?
Use the AUTOOL Walnut Blaster Model Comparison table above to compare HTS678 and HTS728 across rated power, capacity, adapters, pressure controls, operating modes, filtration, and combustion-chamber capability.
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 Operation?
Before cleaning, inspect the machine and accessories, secure the recovery hose, make sure the adapter fits and seals correctly, inspect the filter, use the specified dry walnut abrasive, confirm the target intake valve is closed, connect dry filtered air, isolate other intake openings as required by the service procedure for the specific vehicle, and wear appropriate eye and respiratory protection.
How Can I Prevent Walnut Abrasive Residue From Remaining in the Engine?
Keep recovery active during cleaning, then vacuum out remaining walnut abrasive and inspect the cleaned area before reassembly. Before engine startup, confirm the intake valve position, check that the adapter seal was correct, and make sure no visible residue remains.
How Long Is The Warranty?
The main unit includes a 3-year warranty, standard accessories include a 1-year warranty, and lifetime maintenance support is available. See the Warranty Policy for regional coverage, eligibility, exclusions, and maintenance terms before purchase.
Customer Reviews
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Aveline ✓ Verified Purchase –
I have the AUTOOL complete set and I trust their quality.
I have the AUTOOL complete set and I trust their quality.
Michael Schmocker ✓ Verified Purchase –
Good Invest
Nice Machine, works realy well.
Fast delivery
Excellent . ✓ Verified Purchase –
Excellent tool
Works great. Just as it should. Makes cleaning my Audis valves a breeze instead of manually chipping away the carbon buildup