Petrol injector cleaning is one of the best things you can do for a high mileage engine that's lost a bit of its edge. Carbon buildup in and around the injector nozzle happens to every engine over time. Ultrasonic cleaning makes a real difference to how the car feels to drive. From sharper throttle response and smoother power delivery, the benefits of fuel injector cleaning can be immediately obvious.

For a tuned vehicle especially, injectors flowing evenly, spraying correctly and operating safely is the difference between the engine performing as intended and leaving potential power on the table. Here at Awesome, we use ASNU ultrasonic cleaning equipment, the same kit trusted by OEM manufacturers and serious engine builders.

What is Fuel Injector Cleaning?

A fuel injector is essentially an electronically controlled spray nozzle. It takes fuel and, under pressure, blasts it into a very fine mist at a precise angle and pattern, thousands of times a minute. When carbon starts building up in and around the nozzle, the spray pattern is disrupted and flow across the cylinders can become uneven. The engine management may attempt to compensate for this, but there's only so much it can do, so you might feel it as a slight roughness or a car that just doesn't pull like it used to.

Clean them out and it can be a completely different story. We test every injector before and after the ultrasonic clean so you can see exactly what changed, and the technician will report on each injector.

What Does the Fuel Injector Cleaning Service Include?

The spray pattern and atomisation of each injector will be tested under simulated increasing RPM and duty cycles, and the internal inductance of the injector will be tested along with the leak test and injector flow rate. All tests are carried out pre and post cleaning to confirm improvements. You will receive a technician report on each injector.

Posting your injectors in? We recommend numbering the injectors to the cylinder they have been removed from.

Uprated stainless steel filter baskets and graphite seals are available at £5 per injector for some direct injectors where applicable, a worthwhile upgrade for longevity. The service also pairs well with a full intake valve clean if your engine has been building up deposits on the inlet valves, which on direct injection engines is a matter of when, not if.