fouling plugs

[05blasterkid]

I just rebuilt my topend and rode it twce so far and the first ride I was running oil injection and premix for a little while and it was running fine then if I was in 4th gear and up and with wot or getting close to it, it would bog down. So I rode it like that to get back to the house (took about 15 mins) then we rode yesterday and it was still doing it after we weren't running premix and injection, so I switched the plugs and she ran perfect for about 3 hours or so then we were on our way home and I got into 6th and held it wide open for about 300-500 yards idk how long and then it quit and we were only about 100 feet from my house when it quit lol so I got it home let it sit and pulled the plug and it was fouled, what's the problem?

 

[darederek]

you shouldn't have run oil injection and premix at the same time. but as for the second time you are probably jetted rich

 

[xKroniK13x]

First time was definitely just too much oil in the system. Not sure about second.

 

[yzrider]

is ur air filter over oiled, it will run like a fouled plug when its like that

 

[05blasterkid]

Well idk about the air filter I didn't oil it, when I got it fixed I just had the shop do it so I would asume its fine

 

[mike2225]

do you normally run the injector or premix?

 

[05blasterkid]

No I only did it for 4 hours or so