I think they look pretty good for 110K miles on stock plugs NGK PFR5G-11. They're in the order they were pulled.

 

not to bad

 

Those aren't bad but definitely past there prime. you sure those have 110k on them?

 

those look almost like my 65K plugs I pulled out last year.. this from my bought new 95GXE

 

I'm positive they have 110K. They were changed at 75K by the dealer, I brought them the plugs to have them changed when I had gasket work done. The car has mostly HWY miles, I don't know if that makes a difference?

 

I have about 127k on my 98. No idea if the provious owner ever changed them. The car runs well but i dont want to replace them if i dont have to. Any input?

 

they look good to me..

 

i would just to ease your mind, you dont know if the previous owner beat on the car or what everytime i but i new car i change the oil plugs wires etc, and tranny fluid

 

i wonder if mine look as good as those because i got 122k on my 2002? Haven't taken them out yet because my car still fires up without problems.

 

You could just pull one of the fronts just to see what shape they're in. It would take about 15 minutes or less. I changed mine mainly because I was doing other work like checking the coils and such. I figured if I was going to do the work to check them I'll do a little more and replace the plugs since they're over 100K while I'm in there.

I do think my car starts better and pulls harder. It definitely doesn't hurt. I got a full set of NGK's Plats. on ebay for $50 shipped. The brown you see on the threads is not rust. It's just discolored anti-seize compound.

 

im sure ud notice a big difference when u put new ones in lol

 

Just for future reference, I'd definitely do a tune up to a car that after i purchase it. Unless the person your buying the car from was Jay Leno you don't really know how they took care of it. Besides, it costs like $50 for all the parts

 

interseting

 

not bad for 110

 

not bad at all but def past their prime im sure u will notice the difference in the new ones

 

they look gd for those miles.. hope the next ones last jus as long...

 

My 5th-gen plugs after 135k miles:

 

Hmm they dont look as good as maddmaxx's

 

i work on my friends malibu for some extra side cash, pulled his plugs the other day, the electrode was bonded together... wish i would have got a pic.

 

yeah but what would cause that to happen ? running lean to long ?

 

Hayne's manual has a brief summary of spark plug analysis on the back cover. If you do any work to your car, get one (or a Chilton or FSM)

Spark plug info:
http://www.gnttype.org/techarea/engine/plugs.html

 

u can change em for peace of mind, but nissan and manufacturer say platinum tipped never have to be changed.

Maxx,

didnt have to change em. but i feel u, why not change em.

mine had looked good too at 150k but I replaced them nonetheless

 

What? Really? Can somebody confirm this?

 

Its in the Haynes my good man

 

I change mine almost every year. But I drive hard. Plus I get the NGK coppers so it only cost like $ 10-12 for a set of 6. Can't go wrong for that price.

 

Likewise couldn't agree more

 

looking good for those miles! they are asking for new ones tho!

 

+1 for ngk plats