156 Misfire or Sluggish at Low RPM Water N Sparkplugs Don't Mix
A week after buying my 156 and she was suffering from low power / misfire when accelerating from traffic lights etc until she got over 2500 rpm, then took off. Not always, and usually when warm. I read about water in the sparkplug wells. Well the engine was nice and shiny when I bought her so I guessed they engine cleaned her.
Followed the links about replacing sparkplugs and on removing the cover here is a photo (not very good from my mobi) of what I found. The corrosion on the plug and well-walls built up after only 1 week - pretty quick. Anyway stuck kitchen towel in the well, dried it out - man what a difference. Can't believe all that water only got into 1 well out of 8? Is there another problem?
Just thought I'd post it to help any others.