Skip to main content

Independent German auto service

Direct injection & walnut blasting in Rocklin

Intake carbon-cleaning service for direct-injection engines. Talk with our Rocklin team about your vehicle, symptoms, and whether walnut blasting is appropriate.

Serving Rocklin, Roseville, Loomis, and Lincoln.

PMW technician inspecting beneath a raised vehicle while a colleague holds a tablet

Your service, explained

Start with the cause. Clean where it counts.

Hard starts, rough running, hesitation, or reduced fuel economy are reasons to have your vehicle checked. They do not identify the cause by themselves. We review your concerns and service history before recommending carbon cleaning or another repair.

What is walnut blasting?

Walnut blasting uses crushed walnut-shell media to remove carbon deposits from accessible intake ports and valves. The procedure and suitability depend on the engine.

Discuss your vehicle

When should you ask about it?

Tell us about starting problems, changes in performance, warning lights, and previous cleaning. We will help determine the appropriate service for your vehicle.

Discuss your vehicle

From our shop · Video

Carbon cleaning, explained by Dan.

Get a closer look at direct-injection carbon cleaning and walnut blasting in this video from Performance Motor Works.

Dan introduces the service and the vehicle concerns that may lead you to ask about it. Our team can help you decide whether cleaning is appropriate for your engine and symptoms.

Read the video article →

Related care for your German vehicle.

All service options

Maintenance and brakes lead our service pathways, with other existing repair and inspection services available.

Browse services

We service BMW, Audi, Volkswagen, MINI, Mercedes-Benz, and Porsche. Qualifying repairs are backed by our 2-year / 24,000-mile warranty; ask about coverage for the proposed work.

Ready to discuss carbon cleaning?