Spark Plugs For 2007 Elantra - Hyundai Forums : Hyundai Forum
 
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#1 Old 04-29-2011, 10:31 PM
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John Martens
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Long time lurker...first time poster...

After the dealership just told me that it would cost $126 to replace the spark plugs, I decided to finally try and do it myself...trouble is..I've never changed my own spark plugs before...

I've looked over the hmaservice website and have picked up four NGK G-Power BKR5EGP's. ($21) I found on the NGK website that these plugs are have a gap of .044 inches out of the box. Am I right in believing that I have to re-gap these to 0.039-0.043 inches?

I assume I have to take off the plastic shield covering the sparkplugs...then I remove one at a time and have read that I install and re-torque the new ones to 15-21 foot pounds...is there anything that has to go on the threads before I put them back in?

Sorry for the blatantly obvious (duh!) questions, but I really don't want to wreck this car...there are a few things I need to do to fix it up...rear shocks...front struts...brakes...can't really afford to have it done at the dealership...

Thanks for the help!

John
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#2 Old 04-30-2011, 12:54 AM
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2007 Elantra-- 2006 Santa Fe 3.5 GLS,2005 Elantra hatch,2009 F150
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santa06 is an unknown quantity at this point
Its best if the engine is stone cold before you start ; its what they recommend normally.

Just check the gap ; out of the box they are almost always alright . If you have a proper set of plug gages you could drop it down to .040. Most sets won't have a .041 feeler gage to work with.

I like to put die-electric grease on the inside of the plug boots, prevents corrosion and makes them easier to get off the next time. Theoretical life of wires is around 150k kilometers or 5 years ; but some people push it farther.

Oh year the plastic covers have to come off to get at the plugs and wires. Torque wrench is a good idea for installation, especially if you haven't changed plugs before. The old ones will take quite a bit to get moving , but they should come out fine. Some people put a few drops of oil on the threads of the new plugs, its not very critical in my opinion. Always start the plugs by hand for the first few threads ; making sure to not cross thread them. Good luck.
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#3 Old 06-13-2011, 06:50 PM
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John Martens
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Put the new plugs in last week! When I pulled out the old plugs, I was amazed to see that the platinum points on them were almost worn off...of course...it was 60,000 km over....

Thanks for the help!

John
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#4 Old 06-15-2011, 10:07 PM
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santa06 is an unknown quantity at this point
In a weird conincidence I just changed plugs on wife's 2007 Elantra with 128,000 kilometers, also overdue.

Gaps were opened up to about .045 thou but the platinum tips were still there. Sometimes they fall off at high milage.

I put new premium wires from Rockauto ; local dealer has crazy prices. I put in just regular NGK non platinum plugs.
It means I'll be swapping them out a lot sooner but they are easy to get at anyway.

Glad you were able to get'er done.
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