I know there have been a couple of issues with K3 Engine misfires of late. To cut a long story short my car has started to misfire slightly, but this maybe because of a hole in my exhaust which has now been fixed and the bottom O2 sensor being picky perhaps?
At the moment I have had no Engine management system light come on, but the guys at my local dealership/garage say that any fault can take upto and above 4 cycles before the ECU will show its one. Diag computer plugged in shows nothing at the moment, which my Scangauge is showing no codes either.
At the moment I am now trying some Wynns injector cleaning fluid with a full tank of new Vpower 99 to see what happens. If this continues will then look at plugs, etc... to see if the problem can be determined.
Something interesting that has been mentioned today by one of the long serving Daihatsu mechanics, is that Daihatsu Injectors arnt that brilliant compared to other manufacturers, and this is something that we all need to be aware of.
Will keep you posted on any further issues and/or if the injector cleaner fixed it.