My truck started missing and loosing power all of a sudden and i changed spark plugs and wires. When i replaced them i finally realized that the owners manual was wrong. Then i went to ford forums and found out that coil was on backwards. Thanks for saving me a lot of money. The Firing Order for my 2003 3.0 V6 flex fuel, starting on passenger side closet to windshield going down it is 1-2-3, then drivers side closet to windshield going down is 5-6-4..Thanks ya'll.