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Spark Plug Gap

13K views 7 replies 4 participants last post by  2001VE 
#1 ·
Hello all,
I will be changing the spark plugs for the first time. 2001. around 58k I bought the NGK Platiums (just like the Elantra Maintance Log Suggests) I have no mods on the car. So my question is. The spark plugs come gapped at .044 Under the hood the tag says spark plug gap should be .039-.043
Should I be changing the gap to (lets say) .041?
 
#3 ·
I just found out that the spark plugs can not be adjusted. The box says "Do not adjust spark plug gap due to possible damage to fine center electrode."
The gap is "incorrect" for the car, but yet it is made for my car. I guess .044 it will stay.
 
#5 ·
I am sure that two months ago I was not interested in changing the spark plugs. I am also sure that two months from now someone else will ask this question again. You should know that no thread on here stated what spark plug Hyundai recommends. It seems most people go for cheaper ones, or the real expensive ones. I like to put the OEM parts in. I was asking for some advice from the people on here that would be able to help me. Hopefully you will be more helpful to the next person that asks this question. Probably two months from now.
 
#6 ·
Great signature quote ; Neil Young a personal favourite of mine.

Some people do adjust the gap on platinum plugs; I have numerous times on NGK without any issues. You need the correct round wire gauges, not flat valve gap feeler gages. You also could leave the gap at .044 , a larger gap theoretically gives a stronger spark , asuming the coil has the power.

If you have a tube of dielectric spark plug grease, its not a bad idea to use a dab on each boot.
 
#7 ·
Thanks 2001VE. I saw a video lastnite of people changing the gap on plugs. The only gap tool I have seen has been the one that looks like a coin. I think that I will try the plugs as is. I will pick up some grease though. Of course it's 7:19 in the morning and it's raining. I hope it stops soon so I can get to work.
 
#8 ·
Just stopped raining here too. Worked a 12 hour night shift , man I'm dead.
Coin style is a flat gap , better than nothing , but the "experts" always recomend the round wire style for a true measurement. Price wise I think they cost about the same for a set. When gap is right there should be a slight tug as wire passes through. People like to go slightly smaller than the middle recocomended range so as the electrode wears you still stay close to spec. Good luck.
 
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