I have had 2 Daihatsu Charades and had the same "pinking" problem with both. The strange thing is the noise goes away when I accelerate or rev the engine. My local dealers say "daihatsus don't "pink"!" but both of mine have. They tried to blame supermarket petrol but surely not every Daihatsu owner gets their petrol from independent garages. Has anyone had the same problem or can suggest any solutions. We have tried altering the timing but still get the same noise.