hi there, im wishing to tackle changing my spark plugs, not a problem and very simple to do i know, how ever im not sure which spark plug to buy, i have a Z22se vectra 2.2 Xreg, do i need a single point or a multi electrode spark plug???, i have looked at my current ones, 2 of them anyway, and they are single, but in the haynes it mentions both??? so unsure which to use.....i currently have a small flat spot and not filling me with confidence when pulling away and has made me think that the previous owner has put the wrong spark plug in and should be these multi things......
im sure to some1 this reply will be easy lol
ty in advance