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

Exhaust Gas Recirculation: Testing and Inspection

Fig. 4 EGR Troubleshooting Chart (Part 1 Of 2):

Fig. 4 EGR Troubleshooting Chart (Part 2 Of 2):

Refer to Fig. 4, for troubleshooting charts.

1. With engine running and coolant temperature below 131°F (55°C), ensure EGR valve is not open by feeling diaphragm with finger.
2. Allow engine to reach normal operating temperature. Race engine and check that diaphragm moves toward 1, during acceleration and toward 2 during deceleration.