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

System Test








CHECKING
1. Disconnect the vacuum hose (red stripe) from the throttle body, and connect a vacuum pump to the vacuum hose.
2. Plug the nipple connected to the vacuum hose.
3. Check the following points:




- When the engine is cold (engine coolant temperature 40°C [104°F] or below).




- When the engine is warm (engine coolant temperature 80°C [176°F] or higher).