If the rings are completely worn out they can put more preasure in the crankcase than the pcv can handle. Have it checked out.
split open the crankcase
One possible cause is a blocked PCV (positive crankcase ventilation) valve. As your motor is running the crankcase will build with pressure and the PCV system will let the motor breathe. If the PCV valve is blocked or faulty then the motor will look to release the pressure somewhere else.
your pcv valve or hose is restricted causing excessive crankcase pressure
The suction of a vacuum is caused by a difference in air pressure inside the vacuum cleaner compared to outside. A motor creates a low-pressure zone inside the vacuum, causing the higher-pressure air outside to push debris into the vacuum cleaner.
Cruise control vacuum reservoir
A vacuum cleaner works by creating a pressure difference that sucks air and debris into the machine. The motor inside the vacuum creates a low-pressure zone, causing higher pressure air outside the vacuum to push air (and dirt) into the machine. This process is known as negative pressure or suction.
In vacuum cleaners, pressure is used to create suction that pulls air and debris into the machine. A fan or motor creates a low-pressure area inside the vacuum, causing the higher-pressure air outside to push debris into the vacuum cleaner. This allows the vacuum cleaner to effectively suck up dirt, dust, and other particles from surfaces.
Plugged positive crankcase ventilation valve or collasped hose for the PCValve.
run motor and set A/C on max, blower on full, pull a vacuum on the system and recharge with R12a 2.9Lbs
Suction in a vacuum cleaner is created by a motor that generates airflow. This airflow creates a low-pressure area inside the vacuum, causing air and particles to be sucked in through the nozzle and into the vacuum's dust bag or container. The suction power of the vacuum cleaner is determined by the strength of the motor and the design of the airflow system.
Air pressure is used in a vacuum cleaner to create suction. The motor inside the vacuum cleaner generates a lower air pressure inside the machine, causing outside air to rush in with force through the nozzle. This rapid movement of air allows the vacuum to pick up dirt and debris from surfaces.
PCV is positive crankcase ventilation