Hi all this is my first thread here. love the forums and there seems to be alot of knowledgeable people here. Every time i have a question i search and find exactly what im looking for, but cant find anything definitive about looking at your plugs to diagnose a problem so here goes.

Cleaned my UIM,tb,egr and iacv and couldnt resist doing the plugs while i was at it. They all six have a thin layer of white (almost looks like powder) on them. I think i recall reading white plugs mean your running lean, Black means rich so im afraid i may be running a bit lean. heres pics







Whaddaya think?

 

http://lmgtfy.com/?q=spark+plug+conditions

 

I actually saw that page when i googled it but none of them really matched up to mine. The "normal wear" one is close but mine have quite a bit more white on them than the ones shown and theres no other ones showing white besides the corrosion example which i know they're not corroded. but thx for the link sexy max btw

 

i am quit sure that is normal or over wear on the plugs mothing to worry about i would buy new ones tho

 

cheers just put in NGK plats

 

it might be a coil or signs of a faulty injector

 

i like that lol.

 

and looks pretty normal to me. maybe a tad bit lean but thats better then being rich. run some injector cleaner and new plugs.

 

thx for the replies, I got the car 3000 miles ago and seafoamed (in gas and vac line) followed by a chev/techron cleaner as well as new 02 and egr job, so i would be surprised if the a/f: was lean. Is there anything else that could be causing me to run a bit lean? injectors are within spec

No codes and use bp 92 oct. Love this car and don't want to overlook a potential problem

 

notthin to worry about if its running good.


only thing i can think of is a bad knock sensor. its a ghost code and wont show up cel light its a ghost code. go get it checked even if the light isnt on.