I went autolite copper. I was a little worried I have heard bad things about autolite but I got them form work for free so I went with them. No problems yet 5k miles, ill just have to change them more often. Done at 35k

 

You'll know when you blow a coil.

 

yeah, got iridium ngk's on ebay for about $36.

 

Does anyone know what the difference is between

NGK Iridium plug Stock # 7994 Part # IFR5E-11

and

NGK IX iridium Stock # 5464 Part # BKR5EIX-11

I thought that the IX was better but its actually cheaper (almost half the price) of the "Iridium Plug 7994"?

 

I just installed Bosch Platinum+4 spark plugs yesterday. I thought I would remove my NGK Iridium plugs since the manual states to use Platinum. Yes, I could have gone with NGK platinum plugs, but oh well....

 

I am a firm believer in replacing your stock plugs with your stock plugs. That being said, I wouldn't put anything but NGK or Denso in a Maxima. Autolite plugs are fine for domestic cars and Bosch work great in the German vehicles, but for Nissan, Toyota, etc, the Japanese imports, you should use NGK or Denso, depending on the manufacturer.

I replaced the Platinum plugs in my 2000 Max before I sold it at around 90K-100K miles and the car was actually running fine when I did it. My 2003 Max probably won't see new plugs for a couple more years, since it only has 34K on it now. I didn't have any problems getting the 5 year old plugs out of my 2000, so I don't expect any problems with my 03.

I would suspect that if you want to change yur plugs more frequently, it isn't a problem, since it is fairly easy to do, but I would put NGK back in. If you plan on replacing every 30K, then go with the copper. If you would rather spend your time putting mods on your Max, then go with the Platinum, you won't have to worry about them for literally years.

 

That's what i'm running, no problems so far...

 

Food for thought; BMW Motorsport uses NGK.

 

Platinum's for all imports i think it is....always use oem and make sure its set at the right gap

 

Use only NGK plat. or iridium. If you're spraying, use copper or iridium. I believe the Bosch +4 is being investigated by the FTC for false claims just like splitfire was. Autolite is positively a POS. Use NGK or denso only.

 

Was my question too difficult or too newbie-ish that no one has answered?

 

From the NGK site:

The Iridium - A high quality iridium plug installed as original equipment (OE) in the automotive industry since 1994, and the new Iridium IX® - The ultimate evolution of a performance spark plug.

Basically, the performance IX version has a smaller electrode and doesn't last as long as the OE version. Iridium is superior in every way to Plats. The OE iridium plugs in Lexus' and Toyotas are rated to last 120,000 miles.

 

Thank you, I will go for the IX since its half the price but still lasts longer than the platinums. Thanks again.

 

EY WHAT ABOUT NGK IRIDIUMS. i JUST CHANGED MINES TO DAY. FIRST TIME EVER. I FEEL HAPPY ABOUT IT.

 

I GUESS IT JUST SHOWED DAT I WAS NEWBIE DUE TO ME NOT READING DA WHOLE THREAD

 

5 more to go..

 

So another bad question, wheres a good place to get these? Im probly gonna go with stock NGK platinums, i'm not heavily modded and ive heard copper gives a better spark but still shouldnt be used in these cars, so im going with the stock PFR5G-11, from the dealer their like 8.95 a piece, is there a retail store or anybody who sells these? NGK doesnt from their website, or at least that i saw, and i work at Autozone and we definietly dont have those.

 

8.95 is pretty cheap for the platinium plugs. Most dealers charge around $12/plug. Checker auto charges 9.99 for them. Or you could get the iridiums on ebay for about $6/plug

 

Has anybody purchased parts from BuyNissanParts.com? I would like to know if thy sell genuine Nissan OEM parts or are they aftermarket? I know they say there are OEM but would like to confirm with anyone dealing with this compamy.

 

..... That is incorrect.

 

Well you know what i mean, copper can be used but im hearing widely that OE platinum should be used for the best results.

 

I use Cu's in both of my VQ's... I like changing them out more often I guess.

 

Yeah, OE plats and iridium are superior in every way, even price since they last much longer.

 

1.59 for copper. 9.99 for platnium. coppers will typically last 15k-25k and platniums can go 60k-100k. by my calculations, you could replace coppers at least 6 times every 15k miles and that would be close to the one replacement of the plats. i am a fan of having a newer plug but i have a set of platniums that i plan to use next. the plugs are easy enough to change.

 

I run the NGK V-Power coppers. They work great and I don't mind changing them out more often. This way I can see if there are any noticeable problems each time i change them.

 

10 char

 

00MaxSE; If you follow Nissan's Set Maintenence Schedule, and go in to have them perform it at the reccomended milage (30, 60, 90k mi are the big ones) they will replace your plugs at the 90k maintenence. Everything i've read about modern engines with platinum plugs say 100k before needing to do it. I havent noticed a power increase or fuel economy change after getting my 90k done last week (i have about 94k on my car currently) so my advice is unless you're playing with engine internals, or have a legitimate problem, just leave the plugs alone. use them for the duration they were designed for.

 

Has anyone used the single Platinum NGKs (BKR5EGP)? Would there be any problem using these? They were cheap at $2 at Napa.

 

i just changed changed my plugs today with NGK V-Powers Coppers works fine

12$ spark plugs...

 

Good thing I looked thru the thread, seems to verify the choice. I didn't have time to change them in yet.
Think pep boyz had em for a decent price at $6.99 a piece considering what I've read.
Anyhow over the years in the forum I've seen a lot of endorsements for NGK plugs on the Maxima.
My friend's cousin who is a generalist mechanic says the BOSCH are pieces of S***T. Nothing I've read here changes that so far. I don't always listen to every "mechanic" as they've often proven wrong, but some of you guys confirm that.

Laterz.

 

Changed mine over to NGK Cu. Car runs great. I'll probably change them once a year. Looking at the plugs gives me a good indication of how each cyl. is performing. Put a bit of anti sieze on the threads of each plug and make sure you let the engine cool befor yanking them

mce

 

My maxima has been needing a little TLC. This past weekend I got my fingers greasy and changed the coolant, belts, and plugs. I haven't done a thing to the car except oil changes, air filters, and tires The car has over 100K miles on it.

The plugs were easier to remove than I thought would be. They actually didn't look that bad, but I can tell it runs better and stronger now. I got the NGK-R (stock) from Advance. The plugs were $11 each. But if they last 100K they'll be worth it.

Thanks to the info on this site for links to write-ups on changing the belts and plugs!!

 

i thought Denso Iridium is a really good spark plug...or do u just have to have a force induction

 

In this case they might not be the cheapest (iriduim ix's are 48 shipped to me), but I have always had a good experience with http://www.rockauto.com/

Even if you don't buy from them I would check them out when looking for a part. The Java database they use if leaps and bounds better than any other auto part site I have seen. You can find what you are looking for in a hurry and then compare if you like.

 

My 2001 20th anniversary Maxima will run great for a bit and then start to run rough. A hesitate almost. Like it's missfiring. The check engine light flashes only while under acceleration. other then that the engine light stays on. I have new plugs in there and the coils have been tested and came back fine. I changed the oil and it ran perfect for 2 days and now it's back to it's old self. I put some fuel cleaner through the gas tank and the same thing. Maybe my fuel filter is clogged, or if anyone else has suggestions, I despretly need ideas.

 

I've had the code checked and it has said missfiring. Just wondering what's making it missfire

 

any specific cylinder misfiring? if you lucky, it will be only one coil affecting a specific cylinder.


Later

 

Read the stickys

http://forums.maxima.org/showpost.ph...&postcount=120

 

I have changed mine 3 times. 60k, 90k, and 120k. I used stock plats twice. The first and 3rd time. Used iridium’s at 90k. Could not tell the difference. And if you have to gap them. Be very careful. The tip is very fragile. It gets damaged easily and you won't even know it happened. I messed-up 2 plugs when I was trying to gap them. Stick with stocks, unless you are spraying...

 

I actually replaced my Plugs last week and the car doesnt idle rough in the mornings any more. I previously had pep boys change my plugs. They threw in some Autolites . A month later i had a CEL for a bad plug. Never again will i put anything other than Plats in my ride. the process was easier than i thought it would be for the vq30de-k. The ONLY problem i ran into was trying to get the ignition coil plugs of the coil. I was exhausted after 2 mins. It probably took me 15 alon just to get the rear coil plug out. But to everyone who has never changed their own spark plug... TRY IT!! its not as hard as it looks...just need the right tools.