October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Exhaust Gas RECIRCULATION (EGR) System: Testing
- Check condition of all lines and connections. Start engine and run until normal operating temperature is reached.
- While watching EGR valve, open and close throttle several times. The EGR valve should open and close with RPM change, and close immediately when throttle is closed.
- Using a hand operated vacuum pump, apply vacuum to EGR valve. Valve diaphragm must retain vacuum when open. If not, clean or replace EGR valve as necessary.
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