I'm going to replace my spark plugs, HT leads and ignition coil at the weekend. This is because I've been getting juddering and misfires at low revs in the lower gears.
I was checking last night that I had the right Torx screwdriver for the ignition coil when I noticed a wire coming from the cylinder head between plugs 2 and 3.
Any idea what this is or what it is connected to? A sensor perhaps?
It's a bit dirty, wet and grotty in the channel the plugs sit in on the cylinder head... this can't be good right? I'll give it a good clean before I remove the plugs first!
Any answer on the unknown wire would be great!
car details = 2002, 1.6 Ghia saloon.