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Walnut Blasting

Here at Recharged Automotive in Worcester, we have decades of experience working on direct-injection engines, and using walnut blasting to efficiently and effectively clean carbon build-up from the intake valves in direct-injection engines.

Walnut Blasting in Worcester

Direct-injection engines are prone to carbon deposit build-up on the intake valves which can lead to several issues. Walnut blasting is the best method to remove this carbon build-up and restore the engine’s performance and fuel efficiency, without causing any damage.

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Engine intake valve cleaning in Worcester

Our Walnut Blasting Service Includes:

What is walnut blasting?

Walnut blasting is a method used to clean carbon build-up from the engine’s intake system, and targets the intake valves in direct-injection engines. Crushed walnuts are blasted through the intake ports using compressed air to achieve the correct pressure. It’s an eco-friendly and effective process which helps to maintain the performance of the vehicle.

Engine intake valve cleaning in Worcester

Why is walnut blasting necessary?

On direct-injection engines, the valves aren’t cleaned naturally using fuel which can cause carbon to accumulate. This carbon build-up reduces engine performance and leads to several issues including:

Rough idling
Poor fuel economy
Lack of power

Walnut blasting cleans this carbon build-up to make the vehicle run smoothly again.

How It Works

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FAQs | Walnut Blasting

Here you’ll find the answers to some of the most frequently asked questions about engine intake cleaning, and the walnut blasting technique. If your vehicle has a direct-injection engine and you notice any issues with the performance or fuel economy, get in touch with our team who can assess the engine and determine if a walnut blasting treatment will be beneficial.

How effective is walnut blasting?

Walnut blasting is a very effective process at removing carbon build-up in the intake valves. Other cleaning techniques using chemicals are not as effective as they do not reach all the deposits in the case of severe build-up. Walnut blasting on the other hand, provides a more thorough clean and is also more eco-friendly.

Why are walnut shells used?

Walnut shells are used because they are abrasive enough to clean the carbon deposits, but are not hard enough to damage the metal. Using a more abrasive material would also provide a thorough clean, but would likely scratch and damage the intake valves. Walnut shells also have the benefit of being biodegradable and non-toxic.

What are the benefits of walnut blasting?

Removing carbon deposit build-up in the intake valves with walnut blasting offers many benefits including:

Improving air flow to ensure the engine’s performance and acceleration is maintained.
Improves fuel economy as the carbon deposits interfere with proper combustion and lead to poor fuel efficiency.
Helps to prevent issues such as engine knocking, misfiring, and rough idling.
Keeps the engine in good condition which can help to extend its life and prevent costly repairs.
Being more effective than chemical cleaning.

How do I know if my car needs a walnut blasting service?

Some signs that your engine may need walnut blasting include:

Rough idling
Poor acceleration
Low fuel economy
Engine knocking
Misfiring

We can assess your vehicle and determine if it’s a suitable candidate for a walnut blasting treatment.

Which vehicles need walnut blasting?

Walnut blasting is a process designed for direct-injection engines. In direct-injection engines, the fuel is sprayed directly into the combustion chamber, which results in better economy and reduced emissions. However, this creates the issue of carbon build-up in the intake valves as they are bypassed and hence not cleaned by the fuel. Many German and other European vehicles use direct-injection including BMW, Volkswagen, Audi, Skoda, Seat and Mercedes. Turbo-charged engines are particularly prone to carbon build-up due to the higher operating temperature, and often benefit from walnut blasting.

How long does walnut blasting take?

Walnut blasting usually takes between 3-6 hours. The vast majority of the time taken is due to the preparation steps including removing the intake manifold and other components in order to access the intake valves.

What are the steps involved in a walnut blasting service?

The intake manifold is removed to gain access to the intake valves.
A specialised tool is then used to blast the crushed walnut shells to clean the carbon deposits.
A vacuum removes the loosened material and walnut shells.
The manifold is reassembled and the engine is checked.

How do I book my car in for a walnut blasting treatment in Worcester?

Get in touch if you would like your vehicle’s engine assessed and to book in for a walnut blasting service. We can provide an accurate quote, and get your vehicle booked in as soon as possible so the fuel efficiency and performance are restored.

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