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I have a 2005 lariat 5.4 Triton i have it for a couple of months the truck only had 51000 on it and i have only slammed a couple of km on this morning i have started the truck and it was running fine when i got back home a couple of hrs after i decided to go back to the store and as soon i have started it it was miss fireing very bad so i have brought it yo the mechanic close to home . he ran a test on his snap-on code reader and told me that it was mis firering on 5,6,7,8 one side. we are verry confused and don"t know what is wrong pleas help.
they have told me that 2 bad injectors had cause the problem and it had messed up my catalic converter i would had cost me over 2000$ with labor but becaus it was a recall it dint costed me a dime .....
Sounds like your cam sync. is bad(controls timming). its A $60 part. there is a big "plug" on top of your valve cover, pull it out. Look inside, you need a "torx" bit . Remove the 1 torx bit screw and pull out the syncroniser and replace. Important--- you must rev the engine steadly above 2200rpm for 2 min. to reset the computer. Any Questions call me @ 909-261-1506