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Old 03-02-2013, 07:27 PM
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Hemi spark plug change interval?

couple questions,I was wondering when the plugs need to be changed on my 2011 Hemi? My dealer told me they need changing at 30k miles. My jeep currently has 26k miles, Should i go ahead and have them changed now or wait till 30k miles? Is this a DIY job or should i let the dealer do it? What else needs to be done at 30k miles? sorry if this has been answered before.
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Old 03-02-2013, 08:39 PM
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Re: Hemi spark plug change interval?

I'd look at your maintenance manual but I highly doubt you need to perform this work. I think most spark plugs last 110k miles....could be wrong because I don't own a jeep yet.
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Old 03-02-2013, 08:41 PM
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Re: Hemi spark plug change interval?

All in the glove box book. Frequency of oil and air filters depends on your driving conditions. Spark plugs are a significant item. You will need 16 of them. It is DIY, but a couple plugs are buggers. Easiest with some special tools.
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Old 03-02-2013, 10:41 PM
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Re: Hemi spark plug change interval?

Maintenance manual says to change the plugs on the hemi at 32k miles or 24 months. When my time comes, I'm having the dealer do it.
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Old 03-03-2013, 09:32 AM
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Re: Hemi spark plug change interval?

Not sure why they list a time interval on the plugs. They don't go bad in 2 years
Here is a great DIY on the process:
DIY: Hemi 5.7L Spark Plug Change
So easy a caveman can do it. Just make sure you use a torque wrench, as I believe the heads are aluminum.
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Old 03-03-2013, 09:35 AM
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Re: Hemi spark plug change interval?

Quote:
Originally Posted by The Evil Twin View Post
Not sure why they list a time interval on the plugs. They don't go bad in 2 years
Here is a great DIY on the process:
DIY: Hemi 5.7L Spark Plug Change
So easy a caveman can do it. Just make sure you use a torque wrench, as I believe the heads are aluminum.
Could the 2year thing be more about making sure they don't get corroded in place on the outside, rather than breaking down inside?



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Old 03-03-2013, 11:24 AM
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Re: Hemi spark plug change interval?

Quote:
Originally Posted by Jackspat2 View Post
I'd look at your maintenance manual but I highly doubt you need to perform this work. I think most spark plugs last 110k miles....could be wrong because I don't own a jeep yet.

this is more of what i was thinking. though i have not owned a jeep yet, to change spark plugs out at 30k miles seems odd. i've owned mustangs my whole life and they will last 80k to 100k miles depending on the type of plug. Sounds like its the copper being used in the Hemi that would cause this.

Why not use iridium then, a better product? i put those in the mustang and not a single issue so far.
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Old 03-03-2013, 11:50 AM
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Re: Hemi spark plug change interval?

Quote:
Originally Posted by bill_de View Post
Could the 2year thing be more about making sure they don't get corroded in place on the outside, rather than breaking down inside?

---
Never thought about it that way. I doubt it though, the engine compartment is pretty well sealed up and the coil pack boots are also sealed pretty well. It very well could be because that is the way the manual is set up: miles & time on the same page. Instead of having a miles schedule and a time schedule. Very good question! If I think about it, I'll send an email to Jeep and ask.
Quote:
Originally Posted by daventx View Post
this is more of what i was thinking. though i have not owned a jeep yet, to change spark plugs out at 30k miles seems odd. i've owned mustangs my whole life and they will last 80k to 100k miles depending on the type of plug. Sounds like its the copper being used in the Hemi that would cause this.

Why not use iridium then, a better product? i put those in the mustang and not a single issue so far.
My Subaru was 36k for the plugs. I don't question it. I just do it.
FWIW, there are many discussions on the board regarding the recommendation to stick with the OEM style (copper core) plugs and stick to the schedule. It's a fairly easy thing to do and not crazy expensive either. Considering what we pay for fuel and the (lack of) fuel efficiency in the Hemi, $100 for plugs is less than 2 tanks of fuel. We didn't buy the 5.7 GC because it was cost effective to operate
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Old 03-03-2013, 12:57 PM
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Manual stats to change spark plugs at 32000 miles for te HEMI, for the 3.6 i think its at a 100k
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Old 03-03-2013, 01:10 PM
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Considering what we pay for fuel and the (lack of) fuel efficiency in the Hemi, $100 for plugs is less than 2 tanks of fuel. We didn't buy the 5.7 GC because it was cost effective to operate [/QUOTE]

Considering taking my Hemi to the dealer for this work, if its $100-150 for the job I have no problem. If its $300-400 I'm doing it myself. Anyone know what dealers generally get to perform the plug change?



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Old 03-03-2013, 09:05 PM
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Re: Hemi spark plug change interval?

The plugs on the hemi need to be changed every 30k miles. Its all in the manual. The reason is they are copper core and they will wear in that time period. The high mileage plugs are made of platinum or iridum. The hemi requires the copper core plugs.
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Old 03-03-2013, 09:34 PM
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Re: Hemi spark plug change interval?

Quote:
Originally Posted by dubwarren View Post
Considering what we pay for fuel and the (lack of) fuel efficiency in the Hemi, $100 for plugs is less than 2 tanks of fuel. We didn't buy the 5.7 GC because it was cost effective to operate
Considering taking my Hemi to the dealer for this work, if its $100-150 for the job I have no problem. If its $300-400 I'm doing it myself. Anyone know what dealers generally get to perform the plug change?



Sent from my iPhone 5 using Tapatalk[/QUOTE]
Where are you spending $100 for at 16 plugs?
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