I have an 2000 x reg 1.6i 16v Astra.
My engine management is illuminated and when i drive it over 2.5 revs it flashes until i go below 2.5 revs again where it stops flashing and returns to just being illuminated.
I have replaced the spark plugs and swapped coil packs with my wifes astra and the problem is still there (her car with my coil pack runs fine).
The self test shows a misfire in cylinder 2. I have swapped spark plugs in cylinder around and still only shows a misfire in cylinder 2.
Could the problem be the injectors and how can i test this?
The car starts first time and idles ok. When i drove it slowly in the bad weather no misfires (driven below 2.5 revs).