Do I Need New Injectors?

[cre]

I agree that Techron is a great cleaner and the tank additive is excellent. Do keep in mind that the lower grades or their fuel do not have it or have less than their premium... and that is at a lower concentration as it is intended as a continuous maintenance sort of thing. For a heavy clean run the full additive, don't expect a couple gas tanks with 1/10th as much cleanser to be anywhere near as effective.

However, Techron won't unclog the screen filters in the injectors, remove rust or provide the kind of cleaning that ultrasound will with very old and filthy injectors.

Additionally, listening isn't going to tell you if one is leaking or flowing too little... just that if pintles are loud or not.