Sorry for bumping an old thread here chaps. But this seems to be an ongoing problem for me.
Plugs have been replaced, as have the coils. Yet with just over 1000km since the coil plugs were checked, my misfire returned.
I pulled the coils today and found thus...
this was the worst one, but all coils had some amount of water and corrosion in them.
what's the dealio here? could this be coolant? it had a brownish tinge to it, but i thought maybe it was just water and the corrosion caused the discolouration?
if not, how the heck is water getting in? i haven't sprayed the engine or driven through any water deeper than a couple of inches.
background is i have had the car for about 10k, and the misfire caused by this issue is now a third time deal.
in addition, i've had the rear brake light warning for a while now and one of the globes was dead. i've since replaced both and all working including the led strip thing on top of the tailgate - still got the dang message on the display. the "joys" of an 04 egg i guess. getting rather sick of troubleshooting rather than driving the thing.