Need help with spark plugs and wires! - Mustang Evolution

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Old 01-30-2006, 09:02 PM   #1
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Need help with spark plugs and wires!

I have a 1999 Mustang 3.8L of course and assumed it would be easy to change the spark plugs and wires. Little did i know it was much harder than i figured. Ive read about everything in can possibly find from haynes manuals to online forums etc. The problem is getting to the wires that are behind the motor. Does anyone have any suggestions to getting to those or possible ways to make this a little easier on myself?
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Old 01-30-2006, 09:16 PM   #2
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Re: Need help with spark plugs and wires!

For wires 1,2, and 3 you should be able to pull off the connecting clip. (the black plastic clip that gathers the wires) I know's there's at least two of them. Be careful not to break it since it's good to have your wires seperate and not rubbing against each other. And when pulling the boot off the plug make sure you twist and pull from the boot.

After that, you should be able to pull the wire around the back of the motor. Undo it on both plugs first and it should pull right through.
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Old 01-30-2006, 09:26 PM   #3
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Re: Need help with spark plugs and wires!

the wires that run behind the motor are secured to the intake. you can get your hand back there and pop them loose. the pass. side I had to use a long screwdriver to get it loose.
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Old 01-30-2006, 10:10 PM   #4
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Re: Need help with spark plugs and wires!

its not easy, but with some tools and extensions with ratchets it can be done. It took me about an hour to change all of mine in my 01 mustang. The intake can be removed on the passenger side to make it easy to get to, the drive side back... is just a pain. Remember to put a VERY little bit of anti seeze on the spark plug threads, gap them correctly, and to NOT OVER TIGHTEN THEM! I am not 100% sure on tq specs but its not much at all.
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Old 01-30-2006, 10:11 PM   #5
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Re: Need help with spark plugs and wires!

you can twist the plug covers to break them loose as well.
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Old 01-30-2006, 10:38 PM   #6
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Re: Need help with spark plugs and wires!

Thanks guys for the info..im going to try it again soon as i get an off day. Ill probably cuss some more but ill let yall know how it goes.
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Old 01-30-2006, 11:12 PM   #7
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Re: Need help with spark plugs and wires!

take your time, relax, if you are getting no where take a break think about it and go back at it. You will have it done before you know it. Dont pull of all the plug wires, do the swap one wire at a time.
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Old 01-31-2006, 05:49 PM   #8
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Re: Need help with spark plugs and wires!

Ha! wish i was that laid back and patient. If i start and i get no where im going to get realll mad and real quick. When i first looked at it, i figured it wouldnt be a problem then i realized those backs ones were just stuck. I changed them on a v8 but the v6 just isnt the same. Youd think it would be similar, oh buts its not. Nothing is simple anymore.
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Old 01-31-2006, 07:53 PM   #9
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Re: Need help with spark plugs and wires!

wish I had access to All Data from this computer. torque shouldn't be more then 15ft.lb
dont take my word for it but that's the spec we use in my shop class.
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Old 02-02-2006, 11:01 PM   #10
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Re: Need help with spark plugs and wires!

It is a easy thing to tighten spark plugs. first start them by hand as not to strip. once you have a couple of turns, You can also use the spark plug socket and a small extention to turn them, then you use a ratchet to tighten till snug then with light force turn till resistance.

By the Ford service manual the torque is 84-180 in lbs but I think 180 in lbs is excessive.
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Old 02-03-2006, 09:43 AM   #11
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Re: Need help with spark plugs and wires!

thats INCH pounds not FOOT pounds for yall none close readers... lol
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Old 02-03-2006, 10:07 AM   #12
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Re: Need help with spark plugs and wires!

To convert in pounds to Ft pounds you divide by 12 so 84 in lbs is 7 ft pounds
and 180 in lbs is 15 ft pounds. Most ft lbs torque wrench's dont go that low
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Old 02-03-2006, 03:50 PM   #13
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Re: Need help with spark plugs and wires!

My good one(digital) goes to 25 but the crappy one I bought ast A&A with the steel rid on it that points the trq will go down to 5 so I use that one. I usually snug em in hand tight than turn to 12 ftlb
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Old 02-04-2006, 12:26 AM   #14
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Re: Need help with spark plugs and wires!

You think it was hard for you? Try doing it with a strut brace in the way!
The only saving grace for me was, I was putting in a BBK 65mm T/B on at the same time. So I just took off the old T/B and it made it a TAD bit easier. But it was still a pain in the a**.
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Old 02-04-2006, 10:12 PM   #15
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Re: Need help with spark plugs and wires!

I keep forgetting how hard it was to do some of the mods I did a while ago. As I recall, I didn't have much trouble with the 9 mm wires I installed. It took about a half hour, and I didn't have to take off the manifold to get to them. Although I do have long fingers. Just remember as Spec said, take them off one at a time and change them out one at a time so you don't forget which one went where. As for the plugs, I haven't had to change mine in this car before so I don't have any advice except not to get Bosch or Autolite for Mustangs.
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Old 02-04-2006, 10:18 PM   #16
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Re: Need help with spark plugs and wires!

Quote:
Originally Posted by DarkShadow
I keep forgetting how hard it was to do some of the mods I did a while ago. As I recall, I didn't have much trouble with the 9 mm wires I installed. It took about a half hour, and I didn't have to take off the manifold to get to them. Although I do have long fingers. Just remember as Spec said, take them off one at a time and change them out one at a time so you don't forget which one went where. As for the plugs, I haven't had to change mine in this car before so I don't have any advice except not to get Bosch or Autolite for Mustangs.
What the hell do you think is wrong with autolite????? Motorcraft or Autolite are considered the best for Fords!!!! You are making my head hurt!!!!! Where the hell is my rubber hose. I NEED MY RUBBER HOSE!!!! SOMEONE NEEDS A BEATDOWN!!!!
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Old 02-04-2006, 10:37 PM   #17
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Re: Need help with spark plugs and wires!

Well that's what I would have thought, but I've heard of lots of problems with Autolites in Mustangs...I don't know...maybe they were all installed wrong, but I've heard of about 5 or 6 Mustangs that had problems with them...............
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Old 02-05-2006, 01:19 AM   #18
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Re: Need help with spark plugs and wires!

NEVER believe the "I heard" crap. I heard a V6 stang can beat a Vette? Believe that? NO..and neither do I. I prefer the IrridiumX plugs myself. But I would advise staying away from Bosch. From EXPERIENCE as a GM of 5 shops, they do have problems. Like the platinim tip falling out and scoring the cylinder wall...They "supposedly" fixed that problem. But why take chances?
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Old 02-05-2006, 01:32 AM   #19
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Re: Need help with spark plugs and wires!

Quote:
Originally Posted by 03YellowPony
NEVER believe the "I heard" crap. I heard a V6 stang can beat a Vette? Believe that? NO..and neither do I. I prefer the IrridiumX plugs myself. But I would advise staying away from Bosch. From EXPERIENCE as a GM of 5 shops, they do have problems. Like the platinim tip falling out and scoring the cylinder wall...They "supposedly" fixed that problem. But why take chances?

I've beat a vette. Now it was a 77 vette with a whopping 170HP.

But to the point Bosch aftermarket manufacturer sux. Bosch OEM stuff is OK. They make many factory things for Ford like the TPS and IAC sensors. But there aftermarket stuff is made in sweatshops in Asia that pay 50 cents an hour with little or no quality control
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Old 02-05-2006, 01:50 AM   #20
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Re: Need help with spark plugs and wires!

Quote:
Originally Posted by Danger Dude
I've beat a vette. Now it was a 77 vette with a whopping 170HP.

But to the point Bosch aftermarket manufacturer sux. Bosch OEM stuff is OK. They make many factory things for Ford like the TPS and IAC sensors. But there aftermarket stuff is made in sweatshops in Asia that pay 50 cents an hour with little or no quality control
Ok..you got me there. But you get the analogy. I get so tired of "I heard" this or "I heard" that.
And I totally agree on the Bosch aftermarket crap. Especially the plugs. When I took over as GM of the shops, we were using Bosch "Super" plugs for tune ups. One of the first things I did was to swap them out for Autolites. Second thing I did was dump the SeaFoam and get Justice Brothers Injector cleaner. MUCH BETTER!!!!

Hey Danger Dude, I clicked on the link for your mods, and I got the forum main screen. I'd kinda like to see what you've done so far.
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Old 02-05-2006, 11:49 PM   #21
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Re: Need help with spark plugs and wires!

I have to agree with the Autolites being a good plug. Autolite makes OEM plugs for both Ford and GM.

Plus, AFR recommends them for use with their heads. If they're good enough for those guys, then they're good enough for me. Hell, I'll believe anything they'd recommend.

Strangely enough... my rubber hose is missing too...:
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Old 02-06-2006, 01:04 AM   #22
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Re: Need help with spark plugs and wires!

One more tip. When you go to install the plug, get a piece of 3/8" fuel line. Insert the plug into it, and you can start the plug much easier. Be sure to put some anti-seize compound on the threads, and dielectric grease inside the plug boot on the wires.
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