Are you sure you didn't crack your case when you blew it and it's sucking crankcase oil and air? I have seen that before. I also have an '01 blaster and when I bought it the guy told me he thought the carb was stopped up. I found that the little black box under the cowl (i don't know what it's called, someone told me it was a rev limiter but that don't make sense to me) was bad and when I unplugged it that fixed it. I just left it unplugged and it runs fine. It wouldn't rev very much more than an idle and then start cutting out.