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Try replacing your current 2 stroke oil with 100 percent synthetic 2 stroke oil. Available at any motorsports dealer. Worked for my Razz. Has not smoked since.
The smoke from your muffler has a smell because what is coming out of the muffler is the products of the incomplete combustion of your fuel. Some of those products are gases and vapors that have color and some are dark but small particles - that is what you call smoke. But some of what comes out are various chemicals that your nose detects as odors.
Just having a hole in the muffler won't cause smoke to form. Any smoke coming from an engine is caused by either environment changes (white smoke while engine is warming up), or an engine burning oil (blue smoke). Sometimes even a bad catalytic converter can cause smoke. The hole in the muffler simply gives the smoke a way out. Trying looking for external oil leaks or checking he oil level occasionally to see if it is burning oil. You may see water vapor is there is a hole in the muffler but it wouldn't last long once the muffler warms up and the moisture is burned off. She shouldn't see actual smoke unless there is a problem with the engine.
You may have a blown head gasket.
usually a cracked head but i dont think that bike is liquid cooled
The most common reason for your Pontiac to lose oil and ex smoke from the muffler is a broken piston ring. A malfunctioning exhaust valve can also cause the problem.
The car might not start. If it does start, the banana might shoot out the tailpipe. If it is up in the muffler, it might smoke or burn.
Time for a rebuild
what is the causes of smoke belching
if its cold outside your muffler starts to smoke or it just started up or something im not sure
your car is burning oil.
The smoke.