How Often Should Spark Plugs Be Changed?

[antonio69er]

Hi There, Just wondering how often you should change your spark plugs?. I have a R33 S2 and had platinum plugs put in at 100,000kms. When should I be changing them again?

Thanks

[4drftn]

how many k's are on your speedo now, to give an indication on how long they have been in for...

[antonio69er]

120,000kms on it now

[antonio69er]

Any Suggestions???

[PLYNX]

I change my plugs every second time I do a service. ( not with platinums obviously ). I service it every 5000km.

[lach 32]

i think you meant to change them every 15,000kms - 20,000kms

[str00th]

Id agree with that, unless you have extreme mods and a lot of thrashing

[Jax]

R32 GTSt RB20det Engine (Standard Specs ) Platinum Plugs - Factory recommendation = 100,000k.

[blind_elk]

Hi There, Just wondering how often you should change your spark plugs?. I have a R33 S2 and had platinum plugs put in at 100,000kms. When should I be changing them again?

Thanks

200,000 kms

[white33gtst]

i'm pretty sure spark plugs are meant to be changed every 40,000km on a stock car. but obviously if you have mods done to the car they may need to be changed earlier. 40,000km is a guide, if the car feels like its missing or not running as smooth as it should, then it'd be a good idea to change them.

[antonio69er]

Thanks for your help people

[Jax]

100 bloody thousand is what the factory says. Not a guess, or an opinion. Changed mine @ 108,000, for something to do. Gave no trouble, and all tested out perfect, after removal. Kept them. Would be happy to put back in, if had a faulty one in new set. Why would the factory say 100 if they meant 20 or 30 or 50??

[str00th]

f**k the factory!

oil every 5k

sparkies every 30k (may be overkill but thats just me)

100k on a stock car is legit, but not a modified one.

If my car was stock id be changing every 50k.

From what i know the platinum plugs are great but don't have a long life.

2c

[Jax]

f**k the factory!

oil every 5k

sparkies every 30k (may be overkill but thats just me)

100k on a stock car is legit, but not a modified one.

If my car was stock id be changing every 50k.

From what i know the platinum plugs are great but don't have a long life.

2c

Yeah, right,

What would the factory know ? They only design and make the car. I said standard specs. Modified can be anything.

Plat plugs not long life??

[adam-__-]

Just change your plugs when your car feels like it's not running smooth or when ever you're feeling bored and want to waste some money.

[str00th]

*quote*

Until recently, platinum was considered the best material to use on the top of an electrode because of its durability. However, Iridium is 6 times harder, 8 times stronger, and has a melting point 1200 degrees higher than platinum. Put that into a harsh environment such as an engine piston chamber, and you have a spark plug that can resist wear much better than platinum.

*quote*

For longevity go the iridiums, as long as they are in the correct heat range otherwise they can do more harm then good.

After a while just take the plugs out and give em a gentle scrub with a dry soft bristle brush.

[Habler]

Iridiums might not be the best suggestion for a car that is modified as from memory they do not give as a good of a spark as a copper tiped sparkplug. From the research i have done it is highly suggested you change-

copper tips at around 8000kms give or take (around >$30 for a set)

iridums can last up to 100,00kms but suggested to change them every 40,000kms anyway (nissan OG's - $100)

The way i see it - you could probably leave your oil for more than 5000kms and it might be fine... But why risk having shit oil going through your engine? So why risk having a faulty plug in your engine? i mean its not that much to change them every 50,000 or so is it?

[lighty01]

sparkies dont ever need to be changed unless they are cracked or worn down or faulty

although they should be cleaned every so often (rubbed with sandpaper) and re-gapped.