Astra, Corsa, Zafira, Meriva, Adam, Agila, Combo
So I've developed a misfire on cylinder 4, originally came about as i was accelerating on a slip road, nursed the car home, replaced the plugs, coil and crank sensor. as these were the codes thrown up.
Since then the Misfire on 4 hasn't gone, and this is now the only code showing.
Any help is...