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

Aux Air Regulator, Checking

Auxiliary air regulator, checking

Note: When engine is cold, regulator is open fully, allowing additional air to engine.

- Engine cold
- Run engine at idle speed
- Pinch hose (arrow)
RPM must drop
- Run engine at idle speed for about 5 minutes more
- Repeat above test
RPM must not change

If RPM drops:
- Disconnect electrical plug from auxiliary air regulator
- Check voltage supply with engine running

If voltage is OK:
- Replace auxiliary air regulator