Clogged fuel injectors can cause starting problems, rough idling and poor throttle response. For clean, consistent fuel injector spray, use Jectron every 1250 miles. This high-tech cleaner removes carbon and other stubborn deposits from the injectors, valves and throttle body for a performance improvement you can feel. Cleaner injectors also mean better fuel mileage and reduced exhaust emissions. Safe for catalytic converters and all injection systems. 300ml bottle with fill nozzle.