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Old 04-08-2014, 06:25 PM   #1
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Plugs and Packs

Cars running like 💩 and I think it's the plugs and maybe the coil packs, plus I just hit 88k and they probably need to be done anyways.

Anyone have a decent write up just to go by? And I've read many different things but stock oem brand is fine for this right? 👍 thanks in advance
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Old 04-08-2014, 06:31 PM   #2
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Well the plugs definitely but usually the coil on plugs are good for over 100k but you can have your local ford dealership load test them
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Old 04-08-2014, 08:13 PM   #3
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Coil packs can still be good but the spring and boots can go bad. Cheaper to replace those first.
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Old 04-08-2014, 08:22 PM   #4
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You can buy a spring/boot kit on amazon or rockauto for about $30 vs the $350 you'll pay for a whole new set of coil packs. And yes OEM is the only good option here.

I'd do a full tune up to include the new boots/springs, autolite 103 plugs, new fuel filter, new air filter or clean yours if you have K&N or whatever etc... Its not hard or expensive. Pull the COPS out, rebuild them, plugs are easy and I've done a detailed write up if you've never done them, fuel/air/oil filters are easy too. You can DIY all of this for under $100 easily and it will likely fix your issues if the car just seems to be down on power and not as responsive as usual.
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Old 04-08-2014, 08:25 PM   #5
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I bought a new stock coil to keep in the trunk for emergencies
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Old 04-08-2014, 09:40 PM   #6
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Yeah my car has been running like crap. Not smooth and chugs when I accelerate between a certain range of rpms. I was thinking maybe the fuel pump and filter should be looked at. I first noticed this after a heavy day of rain so that's why I thought maybe the packs if that even makes sense haha.

Do you have that write up still? Do you gap the plugs or keep as they come? Thanks for the info everyone 👍
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Old 04-08-2014, 09:45 PM   #7
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Mine starting doing that and after about 4 weeks the fuel pump failed.
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Old 04-08-2014, 11:09 PM   #8
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Quote:
Originally Posted by Mfore33 View Post
Mine starting doing that and after about 4 weeks the fuel pump failed.

Well this is depressing... Haha did it come and go? Cause my ran really ****ty today and then tonight it was a lot better
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Old 04-08-2014, 11:40 PM   #9
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Yeah. It did. It would idle good some days and wot fine then other days it was other way around. Then finally I was turning into my apartment and it just died. Tried to restart and no fuel. If you do a fuel pump go with the svt focus pump, clean out the tank good and new fuel filter.

---------- Post added at 11:40 PM ---------- Previous post was at 11:39 PM ----------

Also It could be the o2 sensors.
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Old 04-09-2014, 06:08 AM   #10
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Quote:
Originally Posted by Michael.s.king View Post
Yeah my car has been running like crap. Not smooth and chugs when I accelerate between a certain range of rpms. I was thinking maybe the fuel pump and filter should be looked at. I first noticed this after a heavy day of rain so that's why I thought maybe the packs if that even makes sense haha.

Do you have that write up still? Do you gap the plugs or keep as they come? Thanks for the info everyone 👍
4.6 2V Spark Plug change writeup for dummies

I'm pretty sure I linked the COP boot/spring kit in the article. Its pretty self explanatory how to change the boot and spring although my car is plug wires (woot) so you won't see any pics of it.
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