Hey guys i have a 1998 gt stang i just recently around 2 months ago did a spark wire and spark plug change. Both motorcraft parts. I started to get these very little misfires so i decided to check my spark plugs and exactly half of all spark plugs are red. I asuming overheat. But i dont know why and why am i getting little misfires at low rpms mostly on idle someone please help. I checked the coils and they were fine. I did it with a voltage /omh metter.

 

pics plz. red means rust to me which means bad HG.

 

overheated plugs are white. red plugs...hum....i say water issues. Do a Google search on sites with plugs pics and how to read them. You will find what you need.

 

I put Marvel Mystery Oil in my old stang once and that made the spark plugs all red.