spark plug

[gilliam2364]

tell me what you think about this spark plug, good? bad?

http://i163.photobucket.com/albums/t283/gilliam2364/sparkplug003.jpg

http://i163.photobucket.com/albums/t283/gilliam2364/sparkplug001.jpg

[400exrider720]

Looks to be on the rich side but the pics are hard to tell.

[Kickstarts-suck]

you need to show a pic of the bottom of it looking into it.


So far looks rich

here is a pic of mine after I got it jetted right. Notice the brown color.

http://img410.imageshack.us/img410/2277/dsc00056xi1.jpg (http://imageshack.us)

[gilliam2364]

well, if that is the case, what size jet do you think i need with the mods i have shown below? nevermind being dyno, this time i had it taken to a local shop and i dont know what type jet i have in. this quad is the 03' 400ex. any helpwould be greatly appreciated.
one other thing, i run with my air box lid off.

[Kickstarts-suck]

Originally posted by gilliam2364
well, if that is the case, what size jet do you think i need with the mods i have shown below? nevermind being dyno, this time i had it taken to a local shop and i dont know what type jet i have in. this quad is the 03' 400ex. any helpwould be greatly appreciated.
one other thing, i run with my air box lid off.

Just go check what size jet is in it and go down 2 sizes

[gilliam2364]

it has a 155 main and a 40 pilot. does that seem too big for the mods i have? i thought it would be a little bigger. i guess i ned to go a little smaller

[GPracer2500]

There's no way to tell anything usefull from that plug. For example, although it does appear to show rich (pics aren't good tho) which carb circuit is to blame? Pilot too rich? Or maybe it's the main? There's no way to know without doing a proper plug test.

[Honda#4]

GPracer is right