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

C2 - Vacuum Check



Brake Force:






- Push down on brake pedal.

- Start engine.

- Does pedal move downward when the engine is started?

YES -- Power brake booster is functioning properly.

NO -- Go to D1.