Rate my spark plugs.

[Oscar_Muffin]

Today the weather was nice so I decided to take a look into my bike and figure out why the left cylinder was very rich. Long story short, carbs out, left mixture screw was too far out, both float heights were slightly low. Both floats are now set at 14.5mm and both pilot screws are 2 1/2 turs out.



I've taken it for a 30 minute ride and I'm just looking for others' opinions on the spark plugs.

The left plug looks slightly lean, bit of green tint to it on the photo.
The right plug, from my knowledge, looks very lean.

So what are your opinions? Back the right pilot screw out a bit more so I don't end up melting my piston.

[herennow]

Plus only show the last 10 seconds or so of running (unless full of oil, then they just show oil...),

What did you do the last 10 to 30 seconds before you took out the plugs, that will tell which circuit of the carb is visible on the plugs. Idle? WOT?

But some folks can tell you breakfast from your plug chop.  http://www.4secondsflat.com/Spark_plug_reading.html

[Oscar_Muffin]

Last 10 seconds was spent coming up the farm track in 1st gear about 3000 rpm.

[The Buddha]

Neither of those plugs is actually too healthy, lean. But its getting there cos a little grey is at the base of the electrode.
Why are they green ? Never seen that color, camera issues ?

Cool.
Buddha.

[Oscar_Muffin]

I've been able to find a couple of places where people are saying it's green because of overheating and oxidising the copper in the plug.

I'll take the pilot screws out another half turn, go for another decent ride then adjust from there.

[The Buddha]

I've been able to find a couple of places where people are saying it's green because of overheating and oxidising the copper in the plug.

I'll take the pilot screws out another half turn, go for another decent ride then adjust from there.

Temperature will not oxidize it will clean the copper in the plug and effectively it either cleans itself to a ghostly white, or partially cleans itself to brown (good) or doesn't clean too well and is black. So I'd just treat it as a white plug and ignore the green really. If it stays green, you could try a different brand of plug, but first get it to the correct jetting - BTW 3K isn't a good way to check jetting, jetting depends on throttle position, so was it 1/8th throttle ? That is pilot jet 1/2 throttle - that's needle etc etc.
My bet is you are on the pilot but you should check what throttle position you are at.

Cool.
Buddha.