Diyvehiclerepair
- What causes oil to get into the air filter?
- What causes oil in ATV air box?
- Why is there oil in my air filter box on my motorcycle?
- Why is there oil in my throttle body?
What causes oil to get into the air filter?
It is caused by excessive carbon deposits or engine sludge developing inside the crankcase. When the oil does not flow efficiently, excessive engine oil pressure will be created and cause extra oil to push through the PCV valve and into the air intake.
What causes oil in ATV air box?
Registered. Excess crankcase pressure will cause oil to push into the airbox via the vent tube. This can be caused from too much engine oil and/or prolonged full/high throttle use (I.E. Flying down a gravel road tapped for a few miles) Cold (freezing) temperatures will magnify this as well.
Why is there oil in my air filter box on my motorcycle?
The most likely source is the crankcase ventilation system which will have a hose running from the crankcase to the airbox. Bad rings will cause excess crankcase pressure and could blow oil out the breather hose. The more common cause is an excessive amount of oil in the crankcase.
Why is there oil in my throttle body?
However, excessive crankcase pressure can cause oil to be pushed out of the breather and into the throttle body. This can be caused by worn rings or worn valves, oil sloshing (hard cornering), or too much oil in the crankcase.
