So ive been having problems with my car misfiring at high rpm: http://www.grandprixforums.net/misfiring-above-4k-rpm-57314.html
I was scratching my head for about 2 weeks. I changed my spark plugs to autolite 104's and it was still acting up. So for some reason I thought maybe its those metal spark plug retainers, you know the ones that have that spring in them. So I took off those from the front 3 wires, and took a ride with my scan gauge showing my misfires in each cylinder. Well it didnt misfire in cylinders 1,3, and 5 but it did in 2,4, and 6. I then took them off the back 3 cylinders and now the car runs 100%. I couldnt believe that was the problem but my car is running great and im happy again.
I was scratching my head for about 2 weeks. I changed my spark plugs to autolite 104's and it was still acting up. So for some reason I thought maybe its those metal spark plug retainers, you know the ones that have that spring in them. So I took off those from the front 3 wires, and took a ride with my scan gauge showing my misfires in each cylinder. Well it didnt misfire in cylinders 1,3, and 5 but it did in 2,4, and 6. I then took them off the back 3 cylinders and now the car runs 100%. I couldnt believe that was the problem but my car is running great and im happy again.
