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

Warm Engine Control Pressure

Carry out this test when poor performance has been experienced when the engine is warm.
1. Open valve and connect warm-up regulator plug.
2. Leave ignition on until rest pressure is 48.5-54.0 psi (3.4-3.8 bar).
3. If value differs, replace warm-up regulator.