How can I prevent fuel injector failure? We get asked that a lot at Race City Injector. The answer is really simple. Let Race City Injector perform our fuel injector cleaning service on your vehicle!! Fuel today is extremely dirty, which leads to dirty and clogged fuel injectors. Our service technicians will remove the filter baskets, o-rings and pintel caps and replace them with new components. We will also ultrasonically clean your fuel injector, flow test it and record before and after test results which will allow you to see the difference in the performance of a dirty fuel injector versus a clean fuel injector.