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

EGR Port Vacuum Check

1. Disconnect the vacuum hose from the intake manifold EGR vacuum nipple. Connect a hand vacuum pump to the nipple.

2. Start the engine and gradually raise the speed. The vacuum reading on the pump should remain constant.