Missfire?
 

My truck is missing and i cant figure out why.
Every since i changed the plugs it has missed,I thought it was the coil pack so i changed it and still has not fixed the problem.

Only thing i have replaced is spark plug wires.

Any Ideas?

Have or haven't replaced the wire? That could be the issue.

oh sorry i have not replaced the wires.

that is probably the issue

alright,i will change those but if that doesnt fix it,what else is there to replace?

I agree probably the plug wires.....But, what brand plugs did you install?
If they were Bosch, that is your problem.........

did you properly gap the plugs?

Nope not really. I still have Bosch plugs in my truck and after 55706 miles I have had no problems with them.

yes,properly gapped the plugs.They are Motorcraft.

Right choice in plugs!

The next thing to check is to see if you crossed a couple plug wires. The coilpack will have the cylinder numbers each wire should go to, and the cylinder numbers go 1,2,3 (front to back on passenger's side), and 4,5,6 (front to back on driver's side).

ok,im pretty sure i have tha cylinder numbers rite because i changed the coil pack today and thats how they were before and after i hooked them back up.

I yhink you may have a bad plug.Your problem started when you changed the plugs.Start there first.

Good idea.I never thought of that.

are you sure you didnt cross wires at the spark plugs.