Othono cho! — Toyota Avensis, 2.0 liter, 2008

Today I cleaned the engine compartment.
Since I’m officially unemployed, penniless and generally scourged type :D I did the washing with my own hands) Everything is fine, among other things I decided to unscrew the candles, see what and how, and the youthful Uepan desire - there was stupidly looking at it)
The black candles - but I cleaned it and at the same time bought a set of cool brushes for metal. I don’t know what to do with them now, let them roll around.
In general, the question is - yellowness (as if a cat pissed into a candle) on the white edge of the candle indicates that the candle is faulty or not?

And by the way, here's something else. There is something to read in my personal blog, for example, today I won prizes in the Baltic 7)
www.drive2.ru/users/maine…/288230376151751740/#post

UPDATE:
YELLOW SAYS THAT THE CANDLE SHOULD BE SHUT OUT SOON, BUT IT STILL WORKS.