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hi guys!

i really need an urgent help...currently, all 4 plugs are out of my car...

they're NGK Iridium IX, about 12000 miles on em now....i installed em last summer..

my question is, what's the situation of my plugs? do i need to change em? any foul play? thanx!

 
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they look fine to me, but i doubt they'll last beyond 15k. I would just put stock plugs in. I couldn't tell a difference running iridium. Then felt like the engine was struggling and thats when I found they were messed up.

 
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Those plugs look pretty good. You can still run them. But i went with the bosch +4. I noticed a big diff in the high end and over all mpg. It also depends on how you drive. If you drive hard you should change plugs more often. I was told by a parts store here that ngk is owned by a us plug company I forgot which one. But when he told me I was kinda shocked.

 
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thanx alot guys for the info!


however............i though it's probably a good summer DIY....considering i changed em last year...........so................

welcome to: Denso IK-20!





thing i notice most for now...

-much better acceleration in lower RPM.... 0-3000RPM
-engine doesn't jerk anymore during shifting...it's just smoother
-better responce when you press the gas pedal.......it's zoom zoom now

 
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just to make sure........

do we really need anti-seize on the thread? i read many times that we don't need to use em for our car...

so, this time, i didn't use it..

 
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don't use it

 
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i use iriduim and they are the ****. and cheaper than stock platinums.

 
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^i've to disagree with your opinion..

overall the whole year, the iridium IX gave me a pretty good performance and good mileage.....

 
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no i meant i like them. they are cool as ****. thats what i meant. i love them. i get 40 mpg.
i meant the price was cheaper for better plugs

 
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if you use anti sieze, I think you can over torque without knowing it, not 100% sure tho..

 
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Yeah that's what i have in mine as well. It did seem smoother.

 
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you knwo in the 50000 miles of my privious engine, i didnt once think about changing the spark plugs. lol now im curious

 
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i use nkg iridiums. i bought the car 5 months ago and changed the plugs immedietly. and the oil too. anyway the manual says 100k for the plugs but i call bs. my ride had 56k when i bought it. and i pulled the old plugs and they looked a little old. i guess they were originals. 01 model. anyway, i suggest you change your plugs TRANSFORMED. you will feel a difference. and the iridiums are way cheaper price than the stock platinums, and they are better too. 4 cost me 7 bucks. have fun.

 
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lol...

i first changed my plugs at about 26K miles........

it was a year ago........with NGK iridium IX...about 6.99 each...

they run great all along the year.....gas MPG definitely boosted...

this summer, after 12K miles, i changed it with Denso Iridium IK-20....that's like 12.99 each...LOL

definitely feel better performance.......



FYI....stock plugs....are like 10.99 each if im not wrong...they're DENSO platinum...

 
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stock plugs for me were 16 a piece. plantinums. the iridiums were 4 for 7-8 bucks. seriously. were 1k away from each other so that explains it.

 
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i think any performance gain would be in your head unless the old plugs were bad. They all work the same, and stock plugs are just fine.

 
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the picture shows the last one on the right was a little brownish... so i say fouled plug. i also have got better gas mileage with iridiums.

 
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like gear said, it might be just on my head........

but again, there's nothing wrong to change em this year......lol.......

i also suspect a foul on my old........maybe because i recently use a fuel system cleaner? there seems to be an oily look on the top of the plug (not the tip)...

 
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i need to change mine. almost 36k on them, with a healthy daily dose of rev limiter.

 
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^hehe, you definitely do.

well, take a moment to think about it............

ngk iridium ix? 6.99 each....

stock denso platinum? for some strange reason, they're 11 something..

denso iridium IK-20? about 12 each....

don't ever think about bosch..........they're not good for our car

 
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Why? This is the fouth years I used bosch +4 without a single problem and they did a good job to my engine.

 
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our civic has a seperate ignition pack for each spark plug. that means alot of power. so its hot. platinum plugs are stock cause they run "cool" so to say. meaning the tip stays cooler than normal plugs when the firing continues. so platinum 4s can be all the platinums they want but iridiums are cooler than platinums. i have only had the stocks and iridiums so i don't know if bosch is ok or not. i didn't even know bosch made plugs for our rides.

 
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The heat range of a plug has many factors other than what it is made out of. It has to do with the depth of the insulation etc etc. http://www.ngksparkplugs.com/techinf...000&country=US
I just looked this up and it has alot of really good facts.

 
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Denso Iridium IK-20

I have about 45K miles with them and they still look good, yesterday when I checked them.

I istalled them at about 65k-70K miles and now have over 114K miles and the cars still responds well.


.

 
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don't really have the exact fact about bosch plugs..

but.....my opinion was strictly due to the opinion of couple other guys who shared their experience with them in their vic...

i also heard that they respond better in european car.......not japanese...

 
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I'm not sure if this is true, IMO a spark plug is a spark plug. The statement that they respond better in european cars might be because Bosch is German (if i'm not mistaken) but if that was so, then any other part not made in the US or Japan for our civics wouldn't respond well in our cars. right?

 
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that's why i can't really judge the truth about bosch plug's response in our vic..

but still, i prefer not to use em in my car.....i prefer NGK or Denso... =)

 
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http://dezod.com/pd_denso.cfm

You over paid Zen.........You had to pay tax on that $13/plug. We almost always have boat loads of these in stock, esp the IK20.

 
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hahahaha...yea, kind of....

but well.......i was having somekind of kiddie emotion yesterday..

supposedly, i can buy em online and wait......but no, i want it now. LOL.

how much is the shipping cost btw?

 
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I changed my plugs last week. My car has 95K miles and I was still running stock plugs. They still looked OK, insulator and electrodes were intact.

I went for NGK Iridiums. HUGE improvement in throttle response, smoothness and most importantly fuel mileage. This is a very cheap upgrade, they'll probably pay for themselves in a few months in fuel savings...