swapping the coils to different cylinders
I'm not sure your 1.6 has a coil pack per cylinder so may be totally irrelevant mate. I *think* the 1.6 only has one, wait for someone to confirm or suggest otherwise.
it has one main ignition coil pack engine codes:AHW,AXP,AEH,AKL,AVU,BQF,APK,AQY,AZJ,AZH =single dis coil with four ht lead outputs
still one coil pack and four ht leads