i don't think they wear out but they can get clogged (the spray of fuel out of the injector) and the filters themselves can get clogged also. I'm unsure of what detergents are in the higher octane rated fuel so I don't know.

Quote Originally Posted by h2oyo View Post
This got me thinking, I have a 95 540i with almost 200K on it. The car runs great and all but it is a little rough at idle. I know there has been a lot about that subject all ready but the question I have is do injectors really wear out? I have used K44 injector cleaner and I do run the highest octane rated fuel I can find in my area usually 91. Are the injectors something I should be thinking about? Thanks and i'm not trying to hijack this thread it just made me think.
Johan