AUTOOL HTS558 Walnut Blaster for Engine Carbon Cleaning for Workshops

AUTOOL HTS558 Walnut Powder Blast for Engine Carbon Deposit Cleaning

The AUTOOL HTS558 is an advanced cleaning system specifically designed to remove carbon deposits from engine intake manifolds and intake valves . Utilizing walnut powder, it provides a thorough yet gentle cleaning to improve engine performance and reduce fuel consumption. The HTS558 ensures your engine consistently delivers peak performance .

Modern gasoline engines with direct injection are particularly prone to heavy deposit buildup in the intake system. Because the fuel in these engines no longer passes through the intake valves, the cleaning effect of gasoline is absent. Over time, this leads to the formation of hard carbon layers that restrict airflow and reduce engine performance. The AUTOOL HTS558 offers an effective technical solution specifically designed to address this problem.

Technical operating principle of the walnut powder blasting process

Mechanical cleaning without damaging metal surfaces

Walnut dust blasting is a mechanical cleaning process in which fine granules of ground walnut shells are blasted onto the soiled surfaces using compressed air. The material is hard enough to remove carbon deposits, yet soft enough not to damage sensitive engine components.

Blasting and extraction system in one operation

The AUTOOL HTS558 combines blasting and extraction technology in an integrated system. While the walnut powder is blasted onto the contaminated inlet valves, the dissolved residues are simultaneously extracted and filtered. This keeps the work area clean and allows for partial reuse of the blasting media.

Controlled compressed air operation

Cleaning is carried out via an external compressed air connection. The constant air pressure evenly accelerates the walnut powder and directs it precisely onto the surfaces to be cleaned. This enables controlled and efficient removal of carbon deposits.

Key features of the AUTOOL HTS558

• Deep removal of carbon deposits: Thorough removal of stubborn deposits on intake manifolds and valves that impair engine operation.
• External compressed air connection: Provides powerful pressure for efficient cleaning.
• Built-in dust filter: Separates the walnut powder from carbon deposits for reuse.
• Integrated design: Walnut powder is sprayed and recovered simultaneously.
• 3-year warranty: Reliability and safety for long-term use.

Efficient recovery system

A key feature of the AUTOOL HTS558 is its integrated recovery system. During the cleaning process, the walnut dust, along with the loosened deposits, is extracted and separated by a filter. The blasting media can then be reused, significantly reducing material consumption.

Workshop-ready construction

This device was specifically designed for use in workshops. Its robust construction, stable connections, and durable materials ensure reliable performance in daily operation. Performance remains consistent even with frequent use.

Typical causes of carbon deposits in the engine

Direct injection in modern gasoline engines

In engines with gasoline direct injection, the fuel is injected directly into the combustion chamber. As a result, no cleaning fuel components pass through the intake valves. Oil mist from the crankcase ventilation can accumulate there and, over time, lead to heavy carbon deposits.

Short driving distances and low operating temperatures

Vehicles that are primarily driven on short trips often do not reach their optimal operating temperature. In such cases, unburned fuel residues and oil vapors can accumulate more quickly in the intake manifold and lead to deposits.

Wear-related oil mist formation

As mileage increases, many engines produce more oil mist that enters the intake system via the crankcase ventilation. This oil film forms the basis for the formation of carbon deposits on the intake valves.

What are carbon deposits?

Carbon deposits form when incompletely burned fuel leaves residue in the intake manifolds and cylinders. At high temperatures, this residue hardens into a crust that impairs engine performance. It increases fuel consumption and leads to rough engine running.

Effects on engine performance

Heavy deposits can significantly reduce airflow in the intake manifold. This results in less fresh air entering the combustion chamber, leading to incomplete combustion. The engine loses power and responds less responsively to throttle inputs.

Influence on exhaust emissions

Impaired combustion also affects emissions. Vehicles with heavy carbon deposits may exhibit increased emissions and potentially experience problems during emissions testing.

Why is cleaning off carbon deposits important?

Carbon deposits worsen the air-fuel ratio, reduce engine performance, and increase fuel consumption. Regular cleaning (every 40,000 to 50,000 kilometers) ensures smooth engine operation and a longer engine lifespan.

Improved throttle response

After cleaning the intake valves, the engine can breathe freely again. This leads to improved acceleration and smoother power delivery.

Reduced fuel consumption

By restoring optimal airflow, the engine runs more efficiently. In many cases, a slight reduction in fuel consumption can be observed after professional cleaning.

What is walnut powder?

Walnut powder is a natural polishing agent that is harder than carbon deposits but softer than metal. It removes deposits thoroughly without damaging the engine. Walnut powder is practically insoluble in acids, alkalis, and water, making it an ideal cleaning material.

Ecological advantage of the material

Since walnut shells are a natural byproduct of the food industry, the blasting medium is considered environmentally friendly. Compared to chemical cleaners, it does not leave any aggressive residues.

Optimal grit size for engine cleaning

A grit size of approximately 0.4 to 0.8 mm is typically used for cleaning intake valves. This size offers a good balance between cleaning effectiveness and material protection.

Application of the AUTOOL HTS558

1. Fill the AUTOOL HTS558 with 2-4 kg of walnut powder and close the top cover.
2. Connect the spray gun to the return hose.
3. Remove the engine's intake manifold and close the intake valve.
4. Connect a high-pressure air pump (not included) and start the cleaning process.
5. Check the cleaning result and recycle the walnut powder for further use if necessary.

Preparing for engine cleaning

Before cleaning begins, the engine should be cooled to ambient temperature. It is also important that the valve to be cleaned is closed to prevent any blasting media from entering the combustion chamber.

Check after cleaning

After completing the cleaning process, a visual inspection with an endoscope camera is recommended. This allows you to check whether all deposits have been completely removed.

Recommended specifications

• Air pump pressure: >0.7 MPa (7 bar / 102 PSI)
• Walnut powder: diameter 0.4-0.8 mm, quantity 2-4 kg
• Cleaning time: 1-3 minutes per valve

Optimal print settings

Stable air pressure is crucial for a uniform spray pattern. A pressure of approximately 7 to 8 bar has proven particularly effective in practice.

Operating time per engine

Depending on the degree of soiling, a complete cleaning of an engine usually takes between 45 and 90 minutes.

Why AUTOOL HTS558?

Unlike chemical cleaners that can damage the intake manifold and valves, the HTS558 uses natural walnut powder to remove deposits without harming the engine. The unit's closed-loop system ensures that the walnut powder is recycled and reused, increasing efficiency and reducing costs.

Suitable for professional workshops

The AUTOOL HTS558 is particularly suitable for workshops that regularly perform engine cleaning. Thanks to its simple handling and effective blasting process, even heavily soiled intake manifolds can be reliably cleaned.

Scope of delivery

• AUTOOL HTS558 Walnut Powder Emitter
• 2x spray guns
• Safety goggles
• Recycle hose
• Spray gun connection

Additional accessories required

A powerful compressed air source is required for operation. Many workshops use existing compressors with sufficient pressure output for this purpose.

Notes

• Walnut powder is not included – please purchase separately.
• A high-pressure air pump is required (not included).

Professional solution for engine decarbonization in the workshop

The AUTOOL HTS558 provides workshops with an effective system for removing stubborn carbon deposits from intake valves and intake ports. The walnut powder blasting process combines high cleaning performance with gentle application. This makes the device suitable for both routine maintenance and targeted repairs of engines experiencing performance problems due to carbon buildup.

FREE SHIPPING WITHIN THE EU ON ORDERS OVER €100!!

Goods are regularly delivered by shipping to the delivery address provided by the customer. The delivery address provided by the customer during the ordering process is decisive for the transaction. Deviating from this, if PayPal is selected as the payment method, the delivery address stored by the customer with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the shipping company returns the shipped goods to the seller, the customer bears the costs for the unsuccessful shipment. This does not apply if the customer exercises their right of withdrawal by refusing acceptance, if they are not responsible for the circumstance that led to the impossibility of delivery, or if they were temporarily prevented from accepting, unless the seller announced the service to them a reasonable time in advance.

You can choose to pay by bank transfer (prepayment), PayPal (direct debit and credit card via PayPal), Klarna (purchase on account or installment payment), Shop Pay, Google Pay or cash on delivery. If cash on delivery is selected as the payment method, an additional fee of €9.99 will be charged.

Free shipping within Germany for orders over €50.

Shipping costs within the EU are €14.99. For orders over €100, shipping within the entire EU is free.

The delivery time within Germany is usually 1–3 business days.

Worldwide shipping – to countries outside the EU – is also available. The applicable shipping costs are calculated and displayed during checkout depending on the destination country. For deliveries to countries outside the EU, additional customs duties, import taxes or other charges may apply, which are to be borne by the customer.