I pulled out few spark plugs from my car and they all seem to look the same.

They had a light brown deposits on the electrode. No damege to any of them. No oil deposits.

The car runs fine, and the plugs are about 10 mnt. old.(15,000 km on them). I am using stock replacement plugs AC Delcos.

Is that a right color for the plugs? Does anybody have pictures of their spark plugs showing good or bad signs?

Thanks

 

Yeah , i think thats pretty normal man .

 

they usually call that condition Tan, and thats pretty much where you want it.

guess the thing you really have to look out for is white, that means a lean mixture.