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

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EGR Valve: Testing and Inspection

The CCEGR valve can be tested for proper operation by placing it in ice and cooling it to below 40° F. Using vacuum pump and gauge tool C-4207 or equivalent, apply a vacuum of at least 10 inches or mercury to the valve nipple corresponding to the blue striped hose. If vacuum reading drops off more than 1 inch in one minute, the valve should be replaced.