200x spark plug question!

[jkg2003]

What does this spark plug mean, pulled out of a running machine.223432

[yaegerb]

Bad picture, but looks rich

[jkg2003]

Best way to fix that?

[yaegerb]

Different issues could be causing it. I would do a compression check and ensure your compression is per spec. Another issue could be jetting. Ensure you are running the stock jets, if your motor is still stock.

[onformula1]

It may just be the picture, but that plug looks old, rounded electrode edge. If it is put in a new plug and check it after a few rides.

As yaegerb says a compression test is always helpful.

[mendoAu]

Troubleshooting is easier with all the details. How old is the engine, how old is the plug, hows the engine running overall. Could just spend three bucks and get a new plug or you could need a valve/top end rebuild. Also could be a carb/air filter problem or electrical problem like a weak spark caused by several things including your coil or cdi. I'd start with a new plug and check it for a nice hot white/blue spark. Next check compression for bad rings, head gasket or valves or all of above. And then work on your carb and air filter.

[jkg2003]

I just bought the bike, I apologize about the lack of info. No smoking, starts first kick, second kick. Idles ok!


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[jkg2003]

85'


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[Legns]

Well if you just got it do a full service on it check your fluids change your plug check your air filter etc.. Then ride it and recheck