LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 1979 >> 5000 Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION >> Testing >> Vacuum Amplifier/Booster >> 1978-79 Fox
April 5, 2026: LEMON Manuals is launched! Read the announcement.

1978-79 Fox

  1. Install "T" fitting between vacuum amplifier and throttle valve port. Connect open side of "T" fitting to vacuum gauge. Run engine at idle. Vacuum gauge should read 2-4 in. Hg. If not, replace vacuum amplifier.
  2. Next, install "T" fitting in hose between amplifier and throttle valve housing. Connect open side of "T" to vacuum gauge. Run engine at idle and read vacuum gauge. Gauge should read 0.2 - 0.3 in. Hg. If not, check throttle valve port for obstructions.
scientia non olet · About LEMON Manuals