PCV System Description

Some of the unburned gases in the combustion chamber will leak past the gap between the pistons and cylinders into the crankcase. The blow-by gases that include the unburned gases are returned through the positive crankcase ventilation (PCV) valve and are burned. This prevents the blow-by gases from flowing into the atmosphere.

1.5 L engine 

Courtesy of HONDA, U.S.A., INC.

2.4 L engine 

Courtesy of HONDA, U.S.A., INC.