My Iridium plugs (which are 1 step colder) look as though the engine is running lean (even though I just had this dyno'ed and the air/fuel curves look great.

The standard NGK plugs had a nice coffee with cream color but these Iridium plugs look white with a hint of gray. Have any of you ever pulled your plugs to check their color as an indicator of how your engine is running?

 

You're right, it sounds like the plugs are too hot or the mixture too lean.
Last time I checked plugs was in my G-Sedan and they were light tan.

 

how do you check em? ill go try later and let u know what color mine are.

 

Here are my stock plugs after 1900 miles with the supercharger. I fouled out one of the plugs because the car runs rich right now. I just installed new ones a week ago and then found out about the one step cooler NGK Iridium plugs. I just ordered and picked the Iridium’s Today.
David G

 

so what do the iridium plugs do for you?

would they help me in anyway?

 

^^ I would like to know as well...

 

I want to know how to get to the plugs. A DIY pictorial would be GREAT!

 

This is the #4 plug from my car

 

A DIY pictorial on plug access and change is a good idea, just too time consuming for me right now. If someone else can step up, that would be great.

It involves accessing the plug areas, moving some wiring and plumbing, disconnecting the coils, and finally 'digging' out the plugs with a good plug wrench and extension.
Some plugs are much easier than others.
Definitely a biotch of a job, but not insurmountable.
C.

 

dang it. on my prelude, it was a cinch.

 

just be glad you don't have transverse mounted v6 like in alot of domestic.s 1991 Cutlass sumpreme w/ a v6... had to "lift/rotate" the motor on its mounts just to get to the back plugs. good thing on the 99 alero, it was a bit easier. no lifting of the motor.

 

I do a DIY when I install my new plugs.
(GSEDANMAN) You want me to send it to you? And in what format?

David G

 

send me one too. i dont care what format.

 

nuttyprof;
If your anywhere near Redondo Beach, come by and I'll walk you through it.

 

I may come see you sometime RedondoG, Im in Manhattan Beach