11-08-20, 03:42 PM
(09-08-20, 09:10 AM)blackcabbie link Wrote: it had a air filter about 4k miles ago...... if you all think its ok , thats good enough for me...... i just expected the plugs to be a bit more on the brown side of black....... the only reason i took them out to check was because the end can exit pipe looked a bit sooty....... its running ok though, all be it a bit juicy on the mpg ....
cheers
My first Fazer post Ivanising by Mike GTX had textbook brown plugs and I could avg 50mpg two up and spanking it.
My second Fazer also Ivanised by Mike has black plugs much like your photos and a sooty end can. So like you I think it is a little on the rich side even with a K&N air filter.
Rich is safe but I have a hankering for perfect fueling. My intention was to ask my local spanner (who is very good) about it. I also have a number for an ex Yam dealer spanner so I may well ask him too. I shall update this if I find anything out.
The option is to fiddle the mixture screws but the engineer in me would want to measure "how much" and without a sophisticated analyser machine I wouldn't know the best way to go about it.
Bw