Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Positive Crankcase Ventilation: Specifications

Crankcase Pressure Specs
Standard Service Limit
Crankcase Pressure / Vacuum No Load (Positive Pressure) 4 at 4000 Inch Of Water At RPM (in H2O @ rpm)10 at 4000 Inch Of Water At RPM (in H2O @ rpm)
Coolant Temperature. 195 F(Negative Pressure) 12 Inch Of Water (in H2O)14 Inch Of Water (in H2O)