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

Fuel Pressure



Fuel pressure at idle speed
Vacuum hose connected 3.2 ... 3.8 bar
Vacuum hose disconnected 3.8 ... 4.2 bar

Residual pressure after 10 min.
cold engine about 2.2 bar positive pressure
warm engine about 3.0 bar positive pressure