Do fuel-injectors in the prius need replacement as preventative maintenance? Or do people just leave the original alone?
In the last experiment along those lines conducted on PriusChat, three sets of injectors were removed from Prii and sent to a service in Michigan that tested, cleaned/restored, and tested them again, and returned them with the before and after test results. All of the sets, of course, had great test results after cleaning. Two of the three sets also had great test results before cleaning, indicating there hadn't been any real need to disturb them. One set did have poor (and poorly balanced) results before cleaning, and that car did run better afterward. I think all the cars were in the mid-hundred-thousands mile range, but you could look up the original threads for more details like that. So the upshot was it's not impossible or unheard of for injectors to go bad, but it's pretty common for them to keep right on injecting just fine.
Just having a good fuel filter and all that sort of businesses a good thing too generally around 200k I just change the injectors now they're cheap enough a lot of people make them Yes you can get bad ones but they'll get replaced very quickly so on and so forth. So I wouldn't spend a lot of money on them they're very common ticket item today so they shouldn't command top tier prices
