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  #109  
Old 05-08-2015, 09:52 AM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by lysol View Post
THANKS FOR THE GUIDE!!!! I have everything I need to do my 2013 JGC 5.7L this evening except a gapper (will have to pick one up on the way home). I'm currently just shy of 40k miles on the GC. Curious how bad they will look.
l

Curious about the plugs too as I have a 2013 V8 too with 50+K on them.

Dan

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  #110  
Old 05-11-2015, 08:37 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by Lightninrod View Post
l

Curious about the plugs too as I have a 2013 V8 too with 50+K on them.

Dan
Amazing guide that saved me a few hundred $$$ and now I have some new tools to add to my collection!!!

Completed the swap out in about 2 hours. I did one side at a time (it was actually quite simple). The gapper tool I got only had 0.040" and 0.044". The copper spark plugs I got from JustForJeeps were all between this range so I assumed they were 0.043" and just decided they were GTG. I removed the coil packs on the passenger side, using the torque wrench and a spark plug magnetic socket (the torque wrench had a longer handle so I was able to crack the old spark plugs easier), I loosened all the old spark plugs. Then I just used the spark plug socket and 1 at a time, I removed an old one, and put a new one in. Once all (8) were in, I torqued them all down to 18.5 ft lbs. Then I ran the torque wrench down each hole and verified 18.5 again. Then I put the coil packs back in. I repeated for the driver side.

Here are (8) of the plugs that came out. They are either from the passenger or driver side (can't remember) and I am too lazy to take a pic of the other (8) lol. This is after 38,000 miles and let me tell you that it drives so smooth now. No more rough idle or slow acceleration.

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  #111  
Old 05-11-2015, 10:15 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

Those plugs look beautiful for almost 40,000 miles! Hard to believe the car ran crappy with them.
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  #112  
Old 05-12-2015, 07:35 AM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by billt View Post
Those plugs look beautiful for almost 40,000 miles! Hard to believe the car ran crappy with them.
Lol... Then it very well might be the placebo effect...
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  #113  
Old 05-12-2015, 07:37 AM
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Re: DIY: Hemi 5.7L Spark Plug Change

Lysol, the middle electrodes look 'short'. Did you measure their gap?

Also, I'm wondering if Iridium plugs and their 100,000 miles usage wound be worth the extra money 💰?

Dan
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  #114  
Old 05-12-2015, 08:33 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by Lightninrod View Post
Lysol, the middle electrodes look 'short'. Did you measure their gap?

Also, I'm wondering if Iridium plugs and their 100,000 miles usage wound be worth the extra money 💰?

Dan
I'm still looking for a good precise gap tool. Once I find one, I'll check the gap on them all.
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  #115  
Old 05-12-2015, 09:05 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

Buy yourself a set of feeler gauges.
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  #116  
Old 05-27-2015, 07:43 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

Did this today using the guide posted by OP. Thanks so much. Was really easy to do and saved me some $$$. Idles super smooth again now. Love it!!! I used the Autolite Iridiums.
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  #117  
Old 05-27-2015, 08:46 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Did this today using the guide posted by OP. I used the Autolite Iridiums.
Just curious. What did 16 Autolite Iridium Plugs set you back?
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  #118  
Old 05-27-2015, 09:23 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by billt View Post
Just curious. What did 16 Autolite Iridium Plugs set you back?
$120 after tax. They apparently have a 5 year warranty too? I'm sure I'll change them in less time than that.
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  #119  
Old 05-27-2015, 09:37 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

$7.50 a plug. That's not too bad. I would have guessed more.
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  #120  
Old 05-27-2015, 09:38 PM
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Re: DIY: Hemi 5.7L Spark Plug Change

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Originally Posted by billt View Post
$7.50 a plug. That's not too bad. I would have guessed more.
$6.99 each
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