4V Spark Plug Change Write Up - Mustang Evolution

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Old 09-26-2013, 09:34 AM   #1
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4V Spark Plug Change Write Up

Basic Spark plug change on a 2004 Mach 1

Tools needed : 3/8 Ratchet , 5/8 Spark plug socket , 3/8 Extentions , 3/8 Torque Wrench , 10mm socket , 8mm Socket , Impact Gun , anti seize , spark plug gapper coin

I started on my passenger side first , and started by removing my intake tube from the throttle body. Using a 8mm socket

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I simply just placed it out of the way


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Now I removed the coil cover with a 10mm socket

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Now the coil on plugs are exposed , you can simply unplug the pigtail connectors on top with your finger tips , and remove the coil on plug off from the spark plug.

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With your 3/8 Ratchet / long extension / 5/8 spark plug Socket remove the spark plug from the cylinder head

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With your new spark plug be sure to gap the plug to .054 , and apply a small amount of anti-seize to the threads

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I installed my spark plugs by hand until snug, first , And then with the torque wrench installed each at 12lbs.

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The same process is for all 4 , and when your finished just re-install the cover / intake

The driver side is more simple , all you have to do is remove the coil cover with the 10mm socket , and the same process.


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Well that's all , hope this helped
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Old 09-26-2013, 09:35 AM   #2
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I used NGK TR55 Spark plugs , I was told by a local mustang performance shop that these modular motors love these plugs.
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Old 09-26-2013, 01:05 PM   #3
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I think im gonna do this today. My plugs most likely are stock with 40,000 miles on them so what can it hurt? I've been having small hesitation issues, hopefully this will fix the problem. Good write up.
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Old 09-26-2013, 02:10 PM   #4
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its good practise to disconnect the battery as well
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Old 09-26-2013, 11:20 PM   #5
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Quote:
Originally Posted by 98GTCONV View Post
I think im gonna do this today. My plugs most likely are stock with 40,000 miles on them so what can it hurt? I've been having small hesitation issues, hopefully this will fix the problem. Good write up.
Yeah man , this really helped my mach 1 out , runs a lot smoother and start up is perfect
Just make sure to set that gap. And double check the gap anyways

---------- Post added at 11:20 PM ---------- Previous post was at 11:20 PM ----------

Quote:
Originally Posted by Mustangman705 View Post
its good practise to disconnect the battery as well
Yeah your right, I never do though. No problems
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