Product Description
The AUTOOL HTS558 is a walnut-shell abrasive cleaning machine designed for carbon deposits in engine intake passages and on the back side of intake valves. It uses an external compressed-air supply to propel abrasive media and a vacuum system to recover media through the recycle hose. This is workshop equipment that requires engine disassembly and careful adherence to the vehicle manufacturer’s service procedure.
Key Features
- Designed for intake-pipe and intake-valve carbon cleaning
- External compressed-air operation
- Vacuum-assisted abrasive recovery through a recycle hose
- Built-in dust-filter description supplied by the manufacturer
- Two spray guns listed in the package contents
- Goggles and recycle hose listed in the package contents
Specifications
- Brand: AUTOOL
- Model: HTS558
- Product type: Walnut-shell engine intake carbon cleaning machine
- Capacity: 13 L
- Air flow: Less than 300 L/min
- Vacuum suction listed: 0.02 MPa
- Required abrasive size: 0.4-0.8 mm walnut shell media
- Rated frequency: 50/60 Hz
- Voltage options listed: 110V and 220V
- Approximate dimensions: 63 cm long x 44 cm wide x 44 cm high
- Origin listed: Mainland China
Required Equipment
A high-pressure air pump is required and is not included. The source recommends air pressure above 0.7 MPa, or 7 bar/102 PSI. Confirm that your compressor, hose, fittings, and selected machine voltage are suitable before operation.
Included Abrasive Media: Verify Before Ordering
The source contains conflicting package information. One section lists two 1 kg walnut-grit packages, approximately 4.4 lb total, while another section says walnut powder is not included. Confirm the exact contents of the selected variant with the seller before purchase. If media is not included, obtain clean 0.4-0.8 mm walnut-shell abrasive locally.
Typical Operating Sequence
The supplied instructions describe removing the intake manifold, closing the relevant intake valve, connecting the spray gun and recovery hose, connecting a suitable air pump, and cleaning one intake passage at a time. Engine-specific procedures vary. Use the vehicle service manual and qualified technician guidance rather than relying on a generic sequence.
Important Safety Guidance
- For trained automotive technicians or experienced users familiar with engine intake disassembly.
- Switch off the engine, isolate the vehicle as appropriate, and follow the vehicle manufacturer’s service procedure before opening the intake system.
- Make sure the intake valve being cleaned is closed and prevent abrasive media from entering the cylinder.
- Use the supplied eye protection and suitable protection against walnut dust and carbon particles. Work in a well-ventilated area.
- Keep hands, clothing, hoses, and loose objects away from compressed-air outlets and moving equipment.
- Depressurize the air supply before disconnecting hoses or servicing the machine.
- Collect and inspect recovered media. Do not reuse contaminated abrasive without following the machine instructions.
- Thoroughly remove residual abrasive and carbon before reassembly and starting the engine.
- Walnut material may be unsuitable for people with relevant nut allergies. Avoid skin and respiratory exposure to dust.
- Do not use the machine on injectors, throttle bodies, cylinders, or other components unless the applicable service instructions specifically permit it.
Claims and Support Note
The source lists a three-year warranty and describes the unit as an official-store product, but warranty coverage and seller authorization have not been independently verified here. Confirm warranty terms, service support, voltage, and package contents before ordering.
Frequently Asked Questions
What does the HTS558 clean?
It is described for engine intake passages and the back side of intake valves, using walnut-shell abrasive and vacuum recovery.
Is an air compressor included?
No. A suitable external high-pressure air pump is required and is not included.
Is walnut-shell abrasive included?
The source is inconsistent. One section lists two 1 kg packages, while another says the media is not included. Verify the selected variant before purchase.
What abrasive size is required?
The listed walnut-shell media size is 0.4-0.8 mm.
Does it work with 110V or 220V?
The source lists both 110V and 220V. Select and verify the correct voltage for your electrical supply before connecting the machine.
Is this a general engine cleaner?
No broad compatibility should be assumed. The source specifically describes intake-pipe and intake-valve carbon cleaning. Follow the vehicle service manual for any other component.