September 30: LEMON manuals is back up on a temporary server! Slowness is possible
1988-89 Festiva & Tracer (Ported EGR Valve)
- Ensure engine is at normal operating temperature. Check vacuum lines for correct routing. Ensure no vacuum is available to EGR valve with engine idling. Start engine. Place finger against EGR diaphragm. Increase engine RPM. Diaphragm should move.
- Remove EGR vacuum supply hose from EGR valve and plug hose end. Connect a vacuum pump to EGR valve. With engine idling, apply 6 in. Hg to EGR valve. If vacuum holds and idle becomes unstable or engine stalls, EGR valve is functioning properly.