KX Riders

Maintenance & Technical => KX250 / KX125 => Topic started by: Enginerd on April 08, 2015, 08:31:00 AM

Title: 2005 KX250 - Is this too lean?
Post by: Enginerd on April 08, 2015, 08:31:00 AM

I went for a ride on my 2005 KX 250 today, and did a plug chop at the end of my ride. I pulled the plug at home when the engine was cool. Does this plug look too lean?
(http://i.imgur.com/S6Lle54.jpg)

I was using pump premium 91 octane fuel with no ethanol, mixed at 40:1 with Motul 800. I am in northwest Wyoming at about 5,200 feet above sea level. The ambient temp was 40 degrees F with very low humidity. This plug is an NGK B8ES. It looks OK to me, and should be just a touch rich this summer when its 80 degrees out.

What are your opinions?

Thanks!

Title: Re: 2005 KX250 - Is this too lean?
Post by: Foxx4Beaver on April 08, 2015, 08:45:50 AM

that looks like it's running "safe"....both my 250 and 500 are running even lighter tan than that, and I consider them good.

Title: Re: 2005 KX250 - Is this too lean?
Post by: Enginerd on April 08, 2015, 08:53:53 AM

Thanks for the assurance sir! The plug actually looks a bit lighter than it seems in the picture.

Title: Re: 2005 KX250 - Is this too lean?
Post by: Foxx4Beaver on April 08, 2015, 08:55:15 AM

cool...it looks good...and if you say it's running good, I wouldn't touch a thing until it gets warm out again...roost on! :mrgreen: