Spark Plugs For 2.4l I4? - Hyundai Forums : Hyundai Forum
 
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#1 Old 10-27-2008, 01:35 PM
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xxxxxxxxyoshitei
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Just wanted to check if anyone know what is the heat ratings on the factory plugs and/or what is the best aftermarket replacement for the factory plugs?

I'm currently running Denso IK16 in my 2.4L I4 and somehow feel that the engine is not idling smoothly; I get fair amount of vibration in the cabin.

Could I have gotten the wrong plug for my car? What plugs are the dealership putting in when you get your cars serviced and what aftermarket plugs are you guys using?
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#2 Old 10-27-2008, 02:43 PM
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Top of the line Denso Iridium comes from the factory.
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#3 Old 10-27-2008, 05:18 PM
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Quote:
Originally posted by yoshitei@Oct 27 2008, 12:35 PM
[b]Just wanted to check if anyone know what is the heat ratings on the factory plugs and/or what is the best aftermarket replacement for the factory plugs?

I'm currently running Denso IK16 in my 2.4L I4 and somehow feel that the engine is not idling smoothly; I get fair amount of vibration in the cabin.

Could I have gotten the wrong plug for my car? What plugs are the dealership putting in when you get your cars serviced and what aftermarket plugs are you guys using?
[snapback]198836[/snapback]
E3's FTW!!!
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#4 Old 10-30-2008, 09:44 AM
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Sonata06GLSV6
The NF has Iridium spark plugs. Unless you're already at 100,000 miles you are wasting your money replacing them.
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#5 Old 10-31-2008, 03:47 PM
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xxxxxxxxyoshitei
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Quote:
Originally posted by Sonata06GLSV6@Oct 30 2008, 08:44 AM
[b]The NF has Iridium spark plugs. Unless you're already at 100,000 miles you are wasting your money replacing them.
[snapback]199399[/snapback]
Hmm...

The dealers over here aparently insist that there is a need to have them replaced every oil change and the replaced the factory plugs with something really cheap which I subsequently replaced with Denso IK16.

Just wondering what should the actual heat ratings be cause the dealers over here are real crapy it's been 3 years and they still cannot fix the sound in my dashboard.
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#6 Old 10-31-2008, 04:28 PM
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The Hyundai part number for the plugs that go in the Sonata 2.4L is 27410-25000. Taking the plug out of the box, the writing on the plug itself says IRIDIUM on one side, and on the other side it says DENSO SK16PR-A11

Maybe this helps, I don't know. It's all I can contribute... lol.

There is NO reason whatsoever to replace iridium plugs before 100k miles, unless there is something wrong with one of them.
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#7 Old 10-31-2008, 10:08 PM
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Read my experience with Denso IK16 plugs from a different forum Denso Iridium Problems

The "factory" iridium is a long life plug that has a larger iridium center electrode and a platinum tipped ground electrode. Check the link here www.sparkplugs.com mouse over the links on each and it will give a description on the left.

V33-are you gonna try the pulstar plugs next for us?
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#8 Old 11-01-2008, 11:37 AM
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xxxxxxxxyoshitei
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Hey LilBean & Sequoiasoon, many thanks.

Those were very useful information for me. Guess I'll head for the Hyundai spare parts dealer and get a set of plugs from them when my car hits 100K.
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