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Spark plug color

Posted: Sat Jun 07, 2008 8:57 am
by lars
This is how my sparkplugs look like:
IMG_2256small.jpg
No idea how long they have been in there.

K&N filter was already fitted and yesterday i drilled out my original cans like so: http://trx850.motomaniac.net/forum/view ... f=6&t=3130

My thoughts where that the spark plugs are a bit to 'dry' and now with the cans opened up I guess it will run even dryer! do I need to adjust my pilot screws?

Standard the screws are set at 2 turns, hayens suggest 2 1/2 turns. What gives a more rich mixture? 2 or 2 1/2 turns?
Where are the pilot screws located? behind the floaters?

Lars

Re: Spark plug color

Posted: Sat Jun 07, 2008 5:19 pm
by Greg
They look fine to me ... :shock:

G

Re: Spark plug color

Posted: Sat Jun 07, 2008 6:00 pm
by youngy
fine but old...............stick some new ones in.

don't believe anything in the Haynes manual unless you get it confirmed from somewhere else. it is full of lies/bollocks.

pilot screws - Yamaha manual states 2 turns out, and is correct. If you set them to 2 1/2 turns out with standard jetting, needles etc it will pop and fart really bad. Dynojet spec 2 1/2 turns out with their kit and it's fine.

Re: Spark plug color

Posted: Sun Jun 08, 2008 9:19 pm
by slow codger
:D There supposed to be grey. Even the Haynes manual gets that one right.

Dave E

Re: Spark plug color

Posted: Sun Jun 08, 2008 9:20 pm
by youngy
light tan iirc

Re: Spark plug color

Posted: Sun Jun 08, 2008 9:22 pm
by slow codger
:lol: Tan is a shade of brown!

Dave E

Re: Spark plug color

Posted: Sun Jun 08, 2008 9:24 pm
by youngy
yeeeeeeeeeesssssssssssssss.................not a shade of grey is it?

Re: Spark plug color

Posted: Sun Jun 08, 2008 9:26 pm
by slow codger
:D Being old, and the eyes not being what they were the plug in the pic looks grey to me.

Dave E