LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 1994 >> Sentra SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> EGR Valve
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EGR Valve

  1. Disconnect vacuum hose to EGR valve. Plug end of disconnected hose. Connect a vacuum pump to EGR valve. With engine idling, apply vacuum to EGR valve. If vacuum holds and idle becomes unstable or engine stalls, EGR valve is functioning properly.
  2. Ensure engine is at normal operating temperature. Connect a vacuum gauge to EGR hose. Increase engine speed to about 3000 RPM. If vacuum is shown on gauge, system is functioning properly.
scientia non olet · About LEMON Manuals