VGS Performance in Swindon

Injector Servicing & Testing in Swindon

At VGS Performance, we provide professional injector servicing and flow testing using ASNU-approved equipment to ensure accurate cleaning, testing and performance verification.

Our injector service supports a wide range of petrol and diesel engines fitted to vehicles within the Volkswagen Audi Group portfolio, including models from Volkswagen, Audi, SEAT and Škoda — helping to maintain smooth running, efficiency and correct fuel delivery.

Injector Servicing

We specialise in GDI (Gasoline Direct Injection) and MPI (Multi-Point Injection) injector servicing. Regular maintenance is crucial to keep performance consistent, especially before tuning or engine rebuilds. You can either send your injectors directly to us for testing and cleaning, or book your vehicle into our Swindon workshop.

What Does Our Injector Service Include?

What is flow and spray pattern testing?

Flow and spray pattern testing measures how evenly fuel is delivered by each injector. Balanced fuel delivery prevents misfires and ensures all cylinders work together properly. If injectors are unbalanced, it can cause rough running, poor fuel economy, and reduced power.

What is injector leak testing?

Leak testing checks whether injectors hold pressure correctly without allowing fuel to escape when closed. A leaking injector can flood the engine, waste fuel, and damage internal components. By testing for leaks, we can spot faults early and recommend repair or replacement.

What is ultrasonic cleaning?

Ultrasonic cleaning uses high-frequency sound waves in a cleaning solution to break down and remove carbon deposits inside the injector. Over time, carbon build-up restricts flow and harms performance. Cleaning restores fuel efficiency and smooth engine operation.

What is a post-service inspection and report?

After cleaning, every injector is re-tested to confirm it performs to specification. We then issue a detailed ASNU report showing flow rates, spray quality, and any faults found. This report helps you decide if an injector should be reused or replaced.

Additional Recommendations

For many TFSI direct-injection engines fitted to vehicles within the Volkswagen Audi Group range, we recommend pairing injector servicing with an intake carbon clean. Unlike traditional port-injection systems, direct injection does not allow fuel to pass over the intake valves.

Over time, this can lead to carbon deposits forming on the valves and intake ports. Combining injector servicing with carbon cleaning can help maintain performance, reduce the likelihood of misfires and support smoother engine operation.

FAQs

Why is injector servicing important?

Injector servicing is important because it ensures consistent fuel delivery, which helps maintain performance, prevents engine issues, and improves fuel economy.

How often should injectors be serviced?

Injectors should be serviced as part of routine maintenance, or before tuning and major engine work. Regular servicing helps prevent costly repairs later.

What are the signs of injector issues?

The signs of injector issues are poor fuel economy, engine misfires, loss of power during acceleration, or uneven idling.

Can I send my injectors in for servicing?

Yes, you can send your injectors to us for testing and cleaning, or bring your vehicle directly to our Swindon workshop.

Book Your Injector Servicing

Keep your vehicle performing at its best with ASNU injector servicing at VGS Performance in Swindon. We work on a wide range of vehicles within the Volkswagen Audi Group portfolio, providing professional injector cleaning and flow testing to support smooth performance and efficient fuel delivery. Book online today or contact us for more details.