“Why Does My Lawn Mower Blow Oil into Air Filter? Solved”

why does my mower blow oil into the air filter

Why Does My Mower Blow Oil into the Air Filter?

If you’ve noticed oil blowing into the air filter of your mower, it’s essential to identify the root cause to avoid further damage. One possible reason is a clogged or dirty air filter. When the air filter is clogged, it can cause the engine to blow oil into the filter as a way to equalize the pressure. This can also happen if the filter is not properly installed or if it’s damaged.

Internal Engine Issues

Another reason for oil blowing into the air filter could be internal engine issues. A faulty piston ring or cylinder wall can cause oil to leak into the combustion chamber, which then gets blown into the air filter. Additionally, a blocked or clogged breather tube can also lead to oil being pushed into the air filter. The breather tube is designed to allow gases to escape from the engine, but if it’s clogged, the pressure can build up and push oil into the air filter.

Some other potential causes of oil blowing into the air filter include:

• Overfilled oil reservoir: If the oil level is too high, it can cause the engine to blow oil into the air filter.
• Worn or damaged engine components: Worn or damaged engine components, such as piston rings or cylinder walls, can cause oil to leak into the combustion chamber.
• Incorrect oil viscosity: Using the wrong type of oil or oil with the wrong viscosity can cause engine problems, including oil blowing into the air filter.

In many cases, oil blowing into the air filter is a sign of a more significant engine problem that needs to be addressed. It’s crucial to inspect the engine and air filter regularly to identify any potential issues before they become major problems. A dirty or clogged air filter should be cleaned or replaced, and internal engine issues should be addressed by a professional mechanic if you’re not comfortable doing it yourself.