spark plugs misfire
05-03-2016, 01:16 PM
#1
04 Ford F150 lariat
Thread Starter
spark plugs misfire
I have a question that I hope is a simple answer 2004 5.4 3 valve I have come up with a bad misfire and the computer is showing that cyl 3 and cly 7 are misfiring I find it odd that two cyclenders on the op side but the same in order would misfire at the same time anyone ever have this happen
05-03-2016, 01:18 PM
#2
Yeah, a lot of people with that engine. What mileage?
05-03-2016, 01:28 PM
#3
04 Ford F150 lariat
Thread Starter
I have about 146,000 but had the plugs and wires done at 121,000 at my local ford dealer who shafted me out of $1200 to do the job with no broken plugs
05-04-2016, 06:55 AM
#4
Mark
iTrader: (1)
05-04-2016, 07:42 AM
#5
Yup. That engine doesn't have plug wires.
05-04-2016, 12:34 PM
#6
04 Ford F150 lariat
Thread Starter
cop
I know when I said wires I meant coil packs I bought them myself but you may be right there might be one or two bad to replace I will give that a try while I wait for a new set of plugs to come in the first set were champions this set i,m going for the ford 515s and see if I have better luck
05-04-2016, 12:35 PM
#7
Oh... well there's your problem... wouldn't be the first time a user on here has had sh*t for luck with Champions
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05-04-2016, 01:56 PM
#8
Mark
iTrader: (1)
I know when I said wires I meant coil packs I bought them myself but you may be right there might be one or two bad to replace I will give that a try while I wait for a new set of plugs to come in the first set were champions this set i,m going for the ford 515s and see if I have better luck
Good call on swapping out the Champs for SP515"s
05-05-2016, 10:37 AM
#9
04 Ford F150 lariat
Thread Starter
coil packs
I started with the number three cyclinder as that was the easy one to get to and I only had one new one on hand well when I took it out the spring was very rusted and black at the spark plug connection so I see I need to replace them as well as all the plugs whats the better cps out there without breaking the bank and I have to say I,m in renal falure with 2 10 mm kidney stones that are causeing me great amount of pain doing the work is hard but I,m going in for my fourth surgery this month and its just been really hard and I just wanted to say thank you to everyone for your help
05-05-2016, 11:13 AM
#10
Mark
iTrader: (1)
check out rockauto.com great prices .. I bought the AC/Delco spring and boots for $25.. don't for get to use some dielectric grease on the rubber boot ends..not the spring..this will prevent moisture for getting into the connections ...like you found. Good luck with the stones buddy...I feel your pain.