i just got a new set of plugs, i put them in yesterday. since ive been doing some testing running -2 corr on the emanage at most only at 100% throttle from 4000 to 7000 rpms. today i pull a plug to see how they are looking and the one i pulled is a wierd looking white. ive seen plugs from a car running too lean, they are kinda grayand crystally. some parts white, but my plugs look like they were painted white and it car brush off. iv never seen anything like it. and my 02 ratios dont look bad. any ideas what this white is?

 

I would have said you were running too lean, but you mentioned that already. Were you tuning on leaded gas? Other than that, here is a chart from NGK. I'm not sure if it will help:
http://www.ngksparkplugs.com/techinf...q/faqread2.asp

 

Sophis ...... very nice link!
thanks.

 

Just pulled my plugs for inspection

(Ralliart/NGK 7s)
- 90 Octane

 

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jemm:

that's how mine looked at 18k miles..

i got new plugs and i'm definitely tuning my apexi with a wideband this time!

 

They look like they are getting too hot...before altering mixture switch plugs to 8's....do you know what your A/F's are?

 

Hi .. Dyno4mance, I don't have a fuel controller ... I have to make the time to put it on the dyno with the wideband. I had an encounter with some particularly poor petrol a few weeks ago... they were not like this before.

some HKS 8 iridiums are on the way ... (the cheaper Densos are not available locally).

Thanks.

 

wow, no mine dont look like those at all. i wish i had a digi cam so i could show you all. on the bottom electrode it is clean, it looks like a bit of paint or something covering the top electrode.

btw, what is everyone gapping there plugs to? i was told stock gap is .044. this seemed to tall for what im used to in other turbo cars.

 

wow, no mine dont look like those at all. i wish i had a digi cam so i could show you all. on the bottom electrode it is clean, it looks like a bit of paint or something covering the top electrode.

btw, what is everyone gapping there plugs to? i was told stock gap is .044. this seemed to tall for what im used to in other turbo cars.