Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: murdock on December 04, 2021, 02:54:51 PM
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What do you think should be the perfect color of a spark plug in the cb four? ,
dark brown ?,
light brown ?,
gray? ,
White ?
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Cafe con leche ;) o marrĂ³n leonado (fawn brown).
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You cant get a decent plug colour with all this ethanol
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In the other thread I've suggested a spoonful of castor oil.
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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.
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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.