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

Vacuum Check

Checking Condition: Engine coolant temperature: 80 - 95°C (176 - 205°F)

1. Disconnect the vacuum hose from the throttle body EGR vacuum fitting and connect a hand vacuum pump to the fitting.

2. Scan the engine and check to see that, after increasing the engine speed, vacuum raises proportionately to engine speed.

NOTE: If there is a problem with the change in vacuum, it is possible that the throttle body port may be restricted and require cleaning.