Hi, thanks for the reply, Last winter the coil light began flashing and i also noticed that the car wasnt so keen to start in the cold weather. When I took the car for its service i mentioned it and I was told that it was probably one weak plug causing the problem. I was then quoted an awful lot of money to locate and replace the one weak plug. I left it as i couldnt really afford it at the time, but now as the cold weather approaches i think it be best to sort it. Iwas just going to replace all 4 then I at least know they are all good. Any other idead would be appreciated. Im willing to have a go at most things just need a little direction :) Many thanks