So this is happening …

Pull the carbs off and clean and inspect them. It's either dirt in the float valve, or a damaged float valve or bad float or badly adjusted float level. All easy to detect and fix.
 
Check you carburetor floats, if not set right you will leak gas out of the overflow in the carb bowls, assuming it has overflows.
Also check fuel lines and make sure your petcock is not busted (the fuel switch)
 
Stuck float valves, and make sure you are not getting any fuel into the crank case as well. Gas thins the oil out and will cause all kinds of premature wear if you run an engine for very long.

I'd get the fuel issue fixed and then check for gas in the oil.
 
Looks like it was a stuck float valve in the bowl. I took a closer look in the daylight, and I saw that gas was pouring from the overflow tubes (which were kind of pointed back and up, so it was flowing back down the lines back under the motor and along the pipes). I just took the screw driver back end and tapped the bowls like suggested and then no more gas was pouring out. I'm still planning on going back and cleaning the carbs, and making sure all the fuel lines are secure because they don't all seem like it, but I think that's for the weekend probably. I took the bike for a quick ride (started right up) afterwords. When I was finished and was going to wipe my pipes, I noticed this ...


... which I'm almost certain if from the dirtiness from when I lubbed my chain right before the ride. I'm pretty sure this is from the dirty greasy shit that was all over it and from the chain lube itself from spraying it on the chain. The brown color seems to make that the case (you'll notice the bits of crap left on the chain are the same color) ... but I figured I'd show the images just to make sure it's not oil or something else that I need to worry about:


http://i1203.photobucket.com/albums/bb390/tggorton/IMG_20110928_192636.jpg


http://i1203.photobucket.com/albums/bb390/tggorton/IMG_20110928_192647.jpg


frogman: how do I check for gas in the oil?


Thanks for all the help. Hopefully this doesn't become a pattern.

frogman said:
Stuck float valves, and make sure you are not getting any fuel into the crank case as well. Gas thins the oil out and will cause all kinds of premature wear if you run an engine for very long.

I'd get the fuel issue fixed and then check for gas in the oil.
Click to expand...
 
You don't need to on a two stroke. The crankcase and transmission are not connected to each other on an RD.

As a point of principle, the first thing to do with a new (to you) bike is to clean and inspect it and give it a complete service. Change the trans oil, check or replace the plugs, inspect the wiring and plug caps. Clean and inspect the carbs and cables and pipes. Check the ignition timing. That way you get to know the bike and you know what is right and wrong with it.
 
My bad I didn't see the "RD350" in your siggy line, I must have just had my first cup of coffee and my eyes weren't working. ;)
 
We all do it. Read the last few posts and reply and then realize that something got lost in translation.
 
Well, after pretty much figuring out that was the reason my bike got parked 20 years ago I tend to make sure that it is mentioned. It is amazing what thinned oil will do to a good running engine. I'm still surprised it started and ran half assed when I got it.
 
Glad you caught it and it's a reminder for the rest of us to watch out for and to change oil regularly. As long as oil gets recycled, it's cheap insurance.
 
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