Reading off manometer value

Fig 1: Identifying Manometer Pressure Value

Courtesy of VOLVO CARS OF NORTH AMERICA.

NOTE:

The pressure values are given for sea level. High levels can reduce the reading slightly.

Read off manometer value.

The value for a clean crankcase ventilation is -0.2 kPa or lower.

If the manometer indicates a value from -0.2 up to 0.0 kPa or a positive value, the crankcase ventilation is partially or completely blocked and must be cleaned. Crankcase ventilation, cleaning