Walnut Blasting

Our Services

Looking to improve the way your modern vehicle handles and performs on the road? Check out our list of services below.
  • A full safety inspection of your vehicle
  • Walnut blasting of your car's intake valves
  • Friendly pricing
  • Pick up/Drop off services available (arranged in advance)
  • Loaner car available (arranged in advance)

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Noticing a change in the performance of your Luxury Vehicle?

There are many perks to owning a German car. From stylish interiors to the incredible engine performance, there is no question to why they are considered a status symbol for many car lovers. However, just like any vehicle, they do have the occasional issue that will come up.

For newer models that have petrol direct engines with direct fuel injection, many cars experience carbon build-up over time. This results in the car experiencing decreased performance, engine misfire, vehicle sluggishness and much more. While carbon build up can be a serious problem, walnut blasting is the solution to getting your car back to peak performance.

The team at GMW Perth are highly qualified and experienced technicians, knowledgeable across all new and old makes of German autos and equipped with top of the line walnut blasting equipment in our modern workshop. No two cars are the same, which is why before we even begin the service, we will perform a full inspection of your vehicle, to ensure that we are taking the right course of action and coming up with a solution that will have your car back to performing it’s best.

For more information about walnut, blasting read the FAQ’s below or contact the team at GMW with any questions or to book your car in with us today

Get in touch with us today, to see how we can help with your Walnut Blasting.

Why Us?

Flexible Schedule Times

Book your appointment when it is convenient for you.

Full Inspection

A full inspection of your vehicle every time.

Discuss any and all Services

We will discuss any and all services with you, and the best course of action before any work being carried out.

Only the Best

We only use the best parts, oils and lubricants based on their quality and affordability.

Loan Car

We have a loan car available (prior arrangement necessary).

Pick Up/Drop Off Service

Pick up/drop off service is available (prior arrangement necessary).

Weekend Availability

We have weekend availability, however, you must call to discuss.

Qualified Team

A highly qualified team of mechanics who are specialists in German automobiles.

Frequently Asked Questions

Navigating the world of car servicing can be confusing for those not in the industry. The team at GMW wants to change this relationship with mechanics and the customers. We’re dedicated to not just fixing your car but offering advice and information about the ins and outs of the services required.

Our goal is to make sure you do not only feel more informed about what our team is doing when we work on your car, but also learn a thing or two along the way. With that in mind here are some questions (and answers) that we commonly get asked about our walnut blasting service.

Click on the titles below to expand the FAQ's.

To understand walnut blasting, you first need to understand why your car may need to have the service performed. Advancements in auto engineering have seen an increase in direct fuel injection and turbocharged vehicles, as it has allowed for improvements in overall engine performance and fuel economy.

However, this type of engine is not without fault. When you are driving the vehicle small amounts of oil vapour are pushed through the intake manifold, these oil vapours attach to the back of the hot intake valves and create a carbon build up no chemical can 100% remove. The most common way to clean it is through the process of walnut blasting.

The intake manifold gets removed from the engine exposing the cylinder head chambers that lead to the intake valves. We then install a vacuum attachment over the exposed intake port which will vacuum up the carbon and leftover walnut shell once it’s been removed from the back of the valve. We then use broken up the walnut shell in conjunction with high air pressure to blast the back of the intake valves to break up the carbon build up.

At this point, the vacuum will suck up the broken down carbon and leftover walnut shell leaving a clean and shiny intake port. The reason behind using walnut shell instead of other blasting media is because walnut shells cannot damage or alter the machined metal surfaces inside your engine. Walnut shell can also be burned meaning if any small bits are remaining once the job is complete they will burn off once the vehicle is run the first time.

You won’t be able to see that your car needs this service, so much as notice a difference in your engine performance. A misfiring engine, sluggish response time, and extended ignition firing are all symptoms of carbon build up in your engine. Your check engine light can also be an indicator of this as well.
Dealers will suggest between the first 20k and 40k miles. However, it can depend on a variety of factors including the petrol you put in your car, how often you drive, and how you drive. The best thing you can do is be vigilant and take notice of your car’s performance; it is acting up, bring it into the GMW workshop for a checkup.
For most vehicles, we will require the vehicle for the entire day. However, there are some that are much more difficult and can take up to a few days to complete. If you have any questions regarding your vehicle, please visit the contact us page.