Well i know that the last time i changed the plugs in the 'tour, i used autolite and maybe 5000 kms later i went to the dealer to change my timing belt and my 3 out of 4 plugs were cracked so he had to change them, the mechanic at ford also told me that the autolite were not recommended for the zetec he said that the motorcraft brand were much better...
TommyDee: do you have any CEL's lighting up, you could always go to autozone and get the codes pulled just to make sure you don't have any, it might be the cam position sensor messed up that was my problem with my car....oh and by the way the VCT is very very expensive +$500 cdn that's beside labour and every thing else the stealership charges you
