plugs

Hi, i have a 2007 1.4 astra that has got a bad misfire. I have the modis on it and it says cylinder 1 misfire. I changed the plugs but still the same. I then changed the coil pack its a genuine bosch and not a cheap after market coil pack, but its still the same. any ideas??

Hi Guys, First post on here so bare with me. I own a 2012 Astra Eco flex Exclusive and I have had a lot of problems recently with the car locking itself when the drivers door is moved. It has mainly been an intermittent problem, but now it happens 90% of the time I open the door. It does...