1970 Bushwacker 175 (2 stroke)
I was sitting at a stop light today and I don't know if it started when I shifted up into first or when I goosed the throttle but my engine took off like a banchee. I thought it was going to blow it was reving so high. I immediately dropped to neutral and turned the key off but the engine kept going for a little bit. Once it died, I started it again and the same thing happened immediately.
I turned the bike off and pushed it over to the curb and down the street a little ways to a gas station. I let it cool for 5 mins and started it again. No problem. I hopped back on and headed home. About a mile later while I was going through a residential area just a few blocks from home, it started again. I was in 2nd gear but the engine was racing w/o any power going to the wheels. I dropped to Neutral, stopped, and pulled the key. I set the kickstand and tipped the bike over. It still ran for 30-45 seconds. It usually kills immediatley when I put it on the kickstand.
I pushed it home (only 2 blocks away) and I noticed that there was some oil leaking from the fins around the head. I don't know if that's realated or not.
Anyone have an idea of what may be going on? I've had the bike for a couple of months. I haven't had any issues with it before.