Help reading spark plug?

[winnem909]

Hi everybody,

So the other day, as I was just casually riding to class, I noticed that as I gave it throttle it began to bog down, and within a minute my scooter died on me. After having a friend help me come pick it up, I went home and started checking stuff. Everything looked fine, so I decided to put in a new spark plug just in case and it started up just like new! I was happy, but now Im worried about why my spark plug died because it was an NGK iridium one. The pictures is attached. Any ideas on what went wrong with it?

Attachments:

[Rebel]

Welcome

I'm not good at reading them, looks OK to me or a little hot. Technically a normal plug should be a little brown from what the books say.

[mainepeace]

It's hard to see, but to me it looks like it is pretty much Ok, just a bit rich at the high end.

Greg

[jmkjr72]

with modern fuels you need to look at t parts of the plug
the base of the porcilin and there you should see a nice smoke ring about 2mm tall
the you also need to look at the end of the thread ring
that shows that the last circut you were on was either rich or you had a weak spark situation