ok....The plugs were gapped right according to the sticker under the hood, the wires are in the correct order, the injectors were replaced due to gasoline leaking...There are no codes to be telling you because the check engine light isnt on....I take it to mechanics and they all tell me the same thing...."well....it could be a number of things"..no matter what the problem is that is the answer I get...so I dont know...I have had problems with this car ever since i bought it in october of 2005....I got the 60k done In december of that year, and since then i have had more problems...so I am pretty much over this car...I test drove a 97 sho today, but wasnt impressed and all i could think about is "you have a sho now, problems, problems, problems..." I should have never got rid of my 99 mustang for this piece, I am kicking myself now...Now I am off looking for another stang...so no need to post more to this, I just wanted to see what others thought, but i feel these cars are too much of a hassle to keep up running and they really arent worth the work, money and time you put into them, I am throwing in the towel with these cars..Never again will i own one...