2016 1.6t spark plugs part - Page 2 - Hyundai Forums : Hyundai Forum
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post #11 of 12 (permalink) Old 03-20-2017, 10:21 PM
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Originally Posted by staffpro1 View Post
for whatever its worth i ended up buying Denso 3479 from rock auto for 9$/pop (dealer wanted 25$/plug) and dealer also said 100k KM at least. The Canadian manual says every 36k km which is 22.5k miles... kinda rediculous anyways i am at 56k km/35k miles and decided why not since i already have the plugs, took about 45minutes start to finish. torqued to 18.5 as per denso spec of 15-20. Hyundai canada CSR when phoned was also useless REP was contradicting the manual and saying "although manual says R you should inspect it and change if necessary".

Here is a picture of what i took out OEM was NGK iridium, they look like they could probably keep going for a while but do have quite a bit of carbon deposit however i am no mechanic or spark plug expert i am going by the denso replacement pictures. So conclusion they can probably keep going but your performance is probably affected at least a little by these deposits. I think a safe medium then is double the canadian manual interval of 36kkm = 72-80kkm = about every 50k miles for optimal performance. Or if you don't care about performance 100k km is probably fine but the incomplete combustion would probably cause problems later on i'm guessing. I use top tier rated regular 87 gasoline here in canada.

*once again i'm not a mechanic i work in healthcare but i do alot of stuff diy with car so someone with more expertise please chime in.
What's the part number on those NGK plugs?
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post #12 of 12 (permalink) Old 03-20-2017, 11:04 PM Thread Starter
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staffpro1 is an unknown quantity at this point
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Originally Posted by gggplaya View Post
What's the part number on those NGK plugs?

i replaced with

DENSO 3479
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