Worn piston rings.
Incorrect weight engine oil.
Gasoline mixed with engine oil.
Crankcase overfilled with engine oil.
If you do that you'll surely blow that engine up, guaranteed! .
If you don't want the engine to blow up, yes.
the valves or rings are allowing compression blow by to enter the crankcase which causes excess pressure that is brought to the carburetor by the breather tube. your engine is getting tired or you have too much oil in the crankcase.
Set your mower on level ground and wait for 10 minutes or so to let all the oil drain into the crank case, then check the oil level. It sounds like there is too much oil in the engine.
# Why doe the gas furnace blow black smoke?
The pseudolink at the bottom will guide you to videos for this. youtube.com/results?search_query=how+to+blow+smoke+rings
Usually these smaller engine dont use fuel filters. If there is one though it will be located on the hose that goes from under the gas tank before it gets to the carb. They come in various version. Usually they look like a disk looking thing with a hose going into it and another hose going from it to the carb. Just remove the hose clamps and replce it or blow it out. It depends on the type it is. Good luck.
likely a bad engine.
burning oil = blue smoke
is this a diesel truck?does this engine have a turbo?if it is a diesel with a turbo,it will blow white smoke when cold till it warms upif it continues to blow smoke check your air filterother reason if it continues to blow smoke is the turbo is about to crater get it checkedalso check engine oil for coolant lossif coolant is leaking into cylanders,this will cause white smoke
no because you blow out the smoke but only the nicotine goes into your lungs
what color is the smoke. What does it smell like?