AUTOOL HTS728 Walnut Blasting Machine Expert-Grade Carbon Cleaning Machine

AUTOOL HTS728Product OverviewThe 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 Recovery1400WMotor≤3.5KGRecommended Load>0.7MPaAir Source3 YearsWarranty Click to enlarge Click to enlargeProduct DetailsProduct DetailsConfirm 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 MediaHTS728 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 MediaDo 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 RequiredHTS728 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 MattersCarbon 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 GuidanceCleaning 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 SafetyBefore blasting, confirm the target valves are closed, seal uncleaned intake ports, and prepare safety goggles and a respirator to reduce dust exposure risk.Key FeaturesKey FeaturesHTS728 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 CleaningA 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 CleaningThe 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 AbrasiveThe 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 SourceA 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 RecoveryThe 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 DesignThe 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. Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlargeHow It WorksHow It WorksHTS728 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 MediaThe external compressor supplies the air pressure and airflow required to move walnut media through the blasting hose and nozzle.Walnut Shells Impact CarbonCrushed 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 MediaThe 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 ResidueAfter blasting, use air blowing to help clear remaining walnut shell particles before engine reassembly. Click to enlarge Click to enlarge Click to enlargeSpecificationsAUTOOL HTS728 Product SpecificationsHTS728 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 SourceProductAUTOOL HTS728 Intake Valve Walnut Blasting MachinePower SupplyAC 110V / 220VMain Power1400WAir SourceExternal air compressor requiredAir Source Pressure>0.7MPaAir Source Flow Rate>0.4m³/minWalnut MediaRecommended Media Size0.4-0.6mm walnut shell abrasiveBlasting Tank Capacity<4KGRecommended Loading LimitDo not load more than 3.5KG during useStorage Tank Capacity10LMedia Reuse5-10 times under normal conditionsStructure And SizeHose Length2.5mTotal Weight50kgProduct Size1110 × 590 × 535mmCleaning AreasCombustion chamber, intake manifold, intake valve area, exhaust valve areaFiltrationHEPA filter and dust filter mesh recovery structureWarranty3 years for eligible non-human damage cases Click to enlarge Click to enlarge Power And Air SourceProductAUTOOL HTS728 Intake Valve Walnut Blasting MachinePower SupplyAC 110V / 220VMain Power1400WAir SourceExternal air compressor requiredAir Source Pressure>0.7MPaAir Source Flow Rate>0.4m³/min Walnut MediaRecommended Media Size0.4-0.6mm walnut shell abrasiveBlasting Tank Capacity<4KGRecommended Loading LimitDo not load more than 3.5KG during useStorage Tank Capacity10LMedia Reuse5-10 times under normal conditions Structure And SizeHose Length2.5mTotal Weight50kgProduct Size1110 × 590 × 535mmCleaning AreasCombustion chamber, intake manifold, intake valve area, exhaust valve areaFiltrationHEPA filter and dust filter mesh recovery structureWarranty3 years for eligible non-human damage cases How To UseHow To UseFollow 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 MachinePlace 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 MediaMake 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 VehicleRemove 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 PortsInsert 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 ChamberRotate 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 ResidueTurn 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 NotesDo 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. Click to enlarge Click to enlarge Click to enlargeWhat Is In The BoxWhat Is In The BoxThe 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 machineAdapters And Nozzles5 vehicle adapters and blasting nozzles shown in the package imageHoses And ConnectorsRecovery hose, transparent hose, elbow connectors, blasting hose, and connection parts shown in the package imageSafety And ManualSafety goggles and user manual shown in the package imageWalnut MediaWalnut media bags are shown in the package image; final media quantity may vary by SKU, so confirm before ordering if neededSetup RequirementExternal compressor required; use 0.4-0.6mm walnut media and do not load more than 3.5KG during useProduct ComparisonProduct ComparisonCompare 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. Click to enlargeRelated ProductsRelated ProductsCompare related walnut blasting machines and walnut media. Prices are retained from the original product cards. Confirm 0.4-0.6mm media compatibility before ordering media for HTS728.Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Walnut Blasting Machine Accessories1KG Walnut Sand For AUTOOL HTS558,HTS518,HTS559 and HTS678Rated 0 out of 5(0) From US$16.00 Select options This product has multiple variants. The options may be chosen on the product page SALESelect options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Walnut Sand De-Carbon CleanerAUTOOL HTS558 Walnut Blaster Engine CleanerRated 0 out of 5(0) From US$359.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Walnut Sand De-Carbon CleanerAUTOOL HTS559 Walnut Blasting Machine SandblasterRated 0 out of 5(0) From US$549.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Walnut Sand De-Carbon CleanerAUTOOL HTS518 Car Engine Carbon Deposition Cleaner Intake Pipe Valve Cleaning Machine Decarbonizing Auto Decarbon WashRated 0 out of 5(0) From US$539.00 Select options This product has multiple variants. The options may be chosen on the product page SALESelect options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Carbon Deposit Cleaning EquipmentAUTOOL HTS678 Walnut Sand Blaster Cleaner Car Engine Carbon Deposition CleaningRated 0 out of 5(0) From US$999.00 Select options This product has multiple variants. The options may be chosen on the product page Manual And DownloadsManual And DownloadsDownload the HTS728 manual for setup, walnut media loading, blasting operation, recovery mode, combustion chamber cleaning, safety precautions, and maintenance. Click to enlargeAUTOOL HTS728 User ManualOpen the PDF manual for detailed operation, media loading, recovery mode, combustion chamber cleaning, and safety guidance. Download ManualNeed 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.Email[email protected] WhatsApp 86 189 2647 7404Before You Order And UseBefore You Order And UseUse 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 TipsUse 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 AnswersThese 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? A walnut shell sand blaster is a specialized tool that cleans intake, valve, and related engine areas using crushed walnut shells as the abrasive. It helps remove carbon deposits during automotive maintenance and helps prevent performance problems caused by buildup. How Does A Walnut Blasting Machine Work? The machine uses compressed air to shoot crushed walnut shells through a nozzle at high speed. When the walnut shells hit carbon deposits, they help remove buildup. HTS728 also recovers used media and residue through the hose and filtration structure to help keep the work area cleaner. What Walnut Sand Size Should I Use For HTS728? Use 0.4-0.6mm walnut shell abrasive for HTS728. Under normal conditions, walnut shell abrasive can be reused 5-10 times, but replace it when cleaning performance drops or the media becomes too contaminated. How Much Walnut Sand Can I Add? Do not add more than 3.5KG of walnut sand during use. The specification chart lists the blasting tank capacity as less than 4KG, but 3.5KG is the safer working limit for loading, pressure build-up, blasting output, and recovery performance. What Air Compressor Is Required? HTS728 requires an external air compressor. Prepare an air source above 0.7MPa with airflow above 0.4m³/min. AUTOOL recommends using an air compressor equipped with a dryer filter to prevent moisture buildup, walnut shell media clumping, and poor blasting performance. Can HTS728 Clean The Combustion Chamber? Yes. A key upgrade of HTS728 is that it supports engine combustion chamber cleaning through the spark plug hole. Rotate the crankshaft to close the valves, connect the hose and spray gun correctly, confirm sealing, and blow out remaining walnut shell abrasive after cleaning. Is Walnut Blasting Safe To Use On All Types Of Engines? Walnut blasting is generally a safe and effective way to clean intake and valve areas on gasoline and diesel engines when performed correctly. However, specific vehicles may require different access, sealing, and preparation. Consult a professional mechanic before using the machine on a specific vehicle. Are There Any Risks When Using A Walnut Blasting Machine? Yes. The main risks include breathing fine walnut shell dust, blasting while valves are not closed, abrasive entering unintended areas, and residual abrasive remaining after cleaning. Wear safety goggles and a respirator, seal uncleaned ports, confirm the valves are closed, and blow out remaining walnut shell abrasive after cleaning. How Often Should I Use A Walnut Blaster For Intake Manifold And Valve Cleaning? Cleaning frequency depends on vehicle age, mileage, fuel quality, engine design, and driving habits. The source content mentions carbon cleaning after approximately 40,000-50,000 km, while some drivers consider intake and valve cleaning every 30,000-50,000 miles or when reduced performance appears. A professional mechanic can provide guidance based on vehicle condition. Are Replacement Parts And More Media Available? Yes. Replacement parts and blasting media can be purchased from AUTOOL. Use high-quality original or compatible parts made for the machine. Low-quality or fake parts may reduce performance or damage the machine. Regular maintenance and cleaning also help extend service life and maintain cleaning effectiveness.Related GuidesRelated GuidesUse these related articles to understand walnut shells, dry ice vs walnut blasting, and HTS728 engine carbon cleaning applications. Guide / Jan 17How Walnut Shells Effectively Remove Engine Carbon BuildupUnderstand why crushed walnut shells are used for engine carbon deposit removal. Guide / Sep 29Cleaning Engine Carbon – Dry Ice Blasting and Walnut BlastingCompare dry ice blasting and walnut blasting for engine carbon cleaning. Guide / Jan 04HTS728 Walnut Sand Blaster give your car a new lifeRead more about HTS728 walnut blasting applications and engine cleaning value. Guide / 09-23-2024AUTOOL Dry Ice Blaster Machine – A Suitable SolutionWhether you are a first-time buyer or an experienced user of dry ice cleaning machines, this guide will walk you through everything you need to know about the AUTOOL.Warranty And ContactWarranty And ContactFor 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 SupportUse 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 casesHTS728 setup and operation supportWalnut media size and replacement media confirmationAir compressor, airflow, and dryer filter confirmationCombustion chamber, intake manifold, and valve cleaning guidanceTroubleshooting support for blasting, recovery, sealing, and residual abrasive removalEmail Support[email protected] WhatsApp Support 86 189 2647 7404