It's probably caused by "blow-by". Blow-by is caused when the pressurized exhaust leaks past the pistons, into the crankcase. The moving gasses pick up oil vapor. The exhaust gas dumps into the air cleaner and if the engine has blow-by the exhaust gas the oil will deposit in the air cleaner. So to make it short, blow-by means the engine is worn, it's not a good thing. But not necessarily. The FXR, like many other H-D designs, utilizes a dry-sump oiling system. In other words, oil is not stored in the bottom of the engine, as is the case with most cars and SUVs. After it flows through the engine and does it's work there, it drains into the bottom of the engine, and is pumped from there to a tank, and back to the engine. When the engine is off, the oil is held in the tank and prevented from draining back into the engine by a little check ball. If that ball gets dirty (often caused by infrequent operation of the vehicle and neglected oil changes), it does not seal properly. Oil can then drain past it into the bottom of the engine. It does no immediate harm there, but the next time the engine is started and the pistons start moving, there is a change in pressure within the engine that forces this oil to kind of "burp" out of the vent line which leads to... you guessed it, the air cleaner. Change the oil, clean and flush the tank and lines, filter screens, and said check valve, and you'll be fine.
that's normal.
An oil bath air cleaner can be maintained at little cost.
Unscrew the oil cap on the valve cover on the right hand side of your air cleaner it attaches to the air cleaner. Al Cauchon
Your oil filter is located behind the air cleaner on the Driver side wheel well close to the drivers side headlight, remove the air cleaner housing to get to it.
There is a small chrome breather tube going to the air cleaner from the oil tank. After the bike sits all the oil drains down to the tank and when you first start the bike because of the low volume oil pump the some oil goes through the breather and into the air cleaner. you can go to a dealer they have a kit to fix that problem.
1989 Chrysler Lebaron 2.5 engine and you get a lot of oil in your air cleaner compartment what is causing this
Because your pedaling too fast...
NO
PVC valve is clogged
A little over three quarts, plus a little to change the oil in the oil bath air cleaner.
THE AIR CLEANER IS PERMANENT ONLY CHANGE THE OIL IN THE LOWER CUP.
Driver's side, beneath the air cleaner.