I found out what the problem was with my Puch. It was a clogged exhaust pipe. After troubleshooting for hours, I realized that the person who owned it before me probably never maintained it, and in twenty years there would be a lot of carbon build-up. When I took off the exhaust pipe, it weighed about forty pounds. Then I heated up the thing inside it with a blow torch(after taking it out of the exhaust pipe), and knocked out all of the carbon and oil build-up. When I put it back on the bike, it ran like it was new. I then went to my friend's house and he also has a Puch. For the heck of it, we took off the exhaust pipe and it also weighed a lot. We heated it up, knocked out the carbon and oil, and it went about ten miles per hour faster. From my observation, this must be a common moped problem, especially considering that most probably havn't been serviced since they were bought (usually the late seventies). If you own a moped, 1.) take off the exhaust pipe, 2.) take out that thing in the center, 3.) heat it up to almost red hot with a blow torch while handling it with some sort of pliers and, 4.) knock out the carbon deposits with a screw driver or something. By the way, if you feel like waking up all the neighbors take it for a spin without the muffler (WEAR EARPLUGS). Thankyou for all of the help and advice, ----JOHN-----
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