sparks color

[murdock]

What do you think should be the perfect color of a spark plug in the cb four? ,
 dark brown ?,
light brown ?,
 gray? ,
White ?

[deltarider]

Cafe con leche  o marrón leonado (fawn brown).

[Bryanj]

You cant get a decent plug colour with all this ethanol

[deltarider]

In the other thread I've suggested a spoonful of castor oil.

[K2-K6]

I run castor oil in a old V8 car engine, purely because it smells so nice.

Mixed at 100:1 just to give it a very low blend, haven't thought to check plugs for colour but may pull one out tomorrow to have a look.

In a lawnmower and petrol generator too, lovely smell of racing R when using the generator for circular saw etc on site.

[deltarider]

Have to admit I have never tried it myself. It was in an article by Joop Sijses, the chief mechanic of Honda The Netherlands, the man that educated the mecs at Honda dealers.
I did use castor oil however on my 50 year old leather bags. It was last summer and the first time I did at least something as a reward for serving me 41 years, without any care but the repair of an occasional strap.