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1979-2004 V6 Mustang Tech Discussions

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Unread 01-18-2010   #1 (permalink)
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Default 2002 V6 Mustang Spark Plug problems

Hello everyone. I have a 2002 V6. I bought the car back in April, and it ran awesome. About four months after i bought it, one of the spark plugs started to misfire. I decided to replace all 6, so i bought new ones and replaced them. That was in August, when the car had 96,000 miles on it. It now has 103,000 miles and is once again misfiring. I used NGK spark plugs. I was wondering if there is something that caused this rapid wear of the spark plug, or is this normally how long they last?
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Unread 01-18-2010   #2 (permalink)
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Take your car to the FORD DEALER for an oil change or what ever fluid change and let them give you a healthy report about your car ,it could be your coil ,wires did you check witch cylinder is misfiring?I did mine and got a good report ,my coil and wires wear replaced ,gave the car a injection cleaner gumb out and it runs Super now
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Unread 01-18-2010   #3 (permalink)
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Quote:
Originally Posted by redscorpion View Post
Take your car to the FORD DEALER for an oil change or what ever fluid change and let them give you a healthy report about your car ,it could be your coil ,wires did you check witch cylinder is misfiring?I did mine and got a good report ,my coil and wires wear replaced ,gave the car a injection cleaner gumb out and it runs Super now
Dude, he's in Guam......

I would replace your spark plug wires first......
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Unread 01-18-2010   #4 (permalink)
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thank you for the advice. I think I will change the wires first. If I'm still having the problem, then I'll take it into the Ford dealership and let them take a look.
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Unread 01-18-2010   #5 (permalink)
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That is up to you, but they will kill you with labor and parts costs. Pull the plugs one at a time when you do the wires to see which cylinder or wire is giving you the problem. If one is oily or wet, that is the problem one. We do that just to ensure when we go back or the problem persists, we know which one is giving us the most headaches.....
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Unread 01-18-2010   #6 (permalink)
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When I first bougth muy car (99 V6) it was missfiring too. I Change the oil and plugs and it was ok. Took it for an engine wash, and it was missfiring again. I found the sparkplug (#3) , it was wet. so I changed it and now, there is no problem at all. I did this 2 months ago. Should I replace the plugs when i change the wires and coil (2 months from now) ??
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Plans: MAC LT, True duals, SuperSix Power Pack Stage 2, T-lok, 4:10's, Underdrive pulleys, SCT Tuner, suggestions?.... :?:
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Unread 01-19-2010   #7 (permalink)
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Im going to the a car shop this afternoon to have the codes read just to make sure thats all that is wrong, because the "service engine soon" light came on also, but from what i've read, that is expected.

i just changed the oil about a week ago, so i'm almost 100% sure that is not the problem.

i have decided i am going to change all my wires. I'm going to go get some new wires this afternoon from NAPA. I'll let everyone know how it goes.
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Unread 01-19-2010   #8 (permalink)
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alright guys, i went to the shop and had the codes read. as you guys said, there was a misfire in cylinder 1. i replaced all the wires this evening, and it is much better. i can still feel a little bit of jerking though. i think im going to let it sit overnight and when drive it to school tomorrow and see what happens from there. the service engine soon light hasn't come back on yet, but i just drove it up and down the street once, so if it does come on, it'll happen tomorrow. if that happens, what do you think i should do? the guy at the shop said that the coil pack could be going bad and that i should replace that next. what do you guys think?
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Unread 02-25-2010   #9 (permalink)
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Default Yo!

Use "Restore" at every oil change. you can buy it at wallmart and it makes a nice difference. they have 4, 6, and 8 cylinder additives. make sure you get the right one. it helps seal old piston rings and clean your motor. I love it.
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