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New vs Old Spark Plugs


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After changing out the spark plugs, I took a few photos to show the difference of the two. These plugs have 27K total miles on them. about 4K with the Stage 2 tune and 19K with old SCT Stage 4+ tune...remainder of the miles were run stock. Sorry the new plugs aren't in better focus...didn't realize it until I downloaded the photos:

 

IMG_5691_zpse500df6c.jpg

 

IMG_5692_zpsdca11d39.jpg

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I would also recommend, if they are original to have a few of the boots on hand. They are a pita to get the coil packs off the first time. I separated one on my first change. It got stuck on the plug. I had to use a pair of needle nose pliers to get it off the plug. And the boot was damaged getting it off. Sent from my iPhone using Tapatalk

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Also instead of using needle nose pliers' date=' won't it be better to get one of those specialized pair that is made to grip the spark plug boot?[/quote']

 

I haven't seen any plug boot pliers that will work with the deep plug wells that these COP setups use. If someone does know of a plug boot pliers for this type of application, please share source and part number.

 

-Rod

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Actually Mark's coils came off fairly easy as compared to mine. I wiggled them and twisted and they came right off, but be gentle. Did the same thing to my car too. Yeah, I found out about the boots on my Gen3. It actually was a good thing, cause I used the old ones to see how much of the coil wire to trim off. I modded 4.6/5.4 DOHC Accel coils to work in the 3.4.

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I have the new Stage 4+X tune 3 bar sensor 160 thermostat' date=' and Airaid CAI. Do not have meth. Plugs are SP 534 gapped at .030. Sent from my DROID RAZR using Tapatalk [/quote']Thanks You. I will be changing my plug because when I went to track 2weeks ago(at the track) the car stuttering at 5500-6000rpm in 3rd and 4th gear every body think I have a bad plug problem.
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