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

Minimum Air Flow Metered Orifice

Minimum Air Flow Air Metering Fitting:

- Installed in place of the PCV valve when performing Minimum Idle Air Flow Test.

NOTE: 0.125 Inch diameter orifice, tool number 6457, or c-5004, or equivalent.