LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> BMW >> 1976 >> 2002 Standard Trans >> Repair and Diagnosis >> Engine Performance >> Emissions >> EGR Function Testing - BMW >> EGR Function Testing - BMW >> Test 1 >> 1970-73 All Models (Ported EGR Valve)
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

1970-73 All Models (Ported EGR Valve)

  1. Ensure engine is at normal operating temperature. Disconnect vacuum hose at EGR valve. Connect a hand-held vacuum pump to EGR valve. Start engine. Apply vacuum to EGR valve. If engine runs rough or stalls, and EGR valve holds vacuum, EGR valve is functioning properly.
  2. 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