Old fuel, carbon, and residue from normal use can cause fuel injectors and/or their filter baskets to become clogged, sometimes to such an extent that it does not allow fuel to flow through. Once the injectors themselves or the filter baskets becomes clogged, no amount of intake or fuel rail induced injector cleaner will resolve the problem. The only effective way to deal with a clogged fuel injector is to remove it from the engine and have them professionally cleaned. At InjectorRx, we use a proprietary ultrasonic cleaning process to return your injectors to a like-new state in three simple steps.