LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1981 >> B2000 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION >> Testing >> Vacuum Amplifier
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Vacuum Amplifier

  1. Remove air cleaner and disconnect vacuum line from thermo valve (vacuum amplifier-to-EGR solenoid line from solenoid valve on Calif. B2000). Connect vacuum gauge to disconnected hose. Run engine at idle and disconnect vacuum amplifier-to-carburetor vacuum line at carburetor. Gauge reading should be 1.6-2.4 in. Hg on 626 models and 1.8-2.2 in. Hg on all other models.
  2. Slowly increase engine speed to 3500 RPM. Gauge should read 3.6 in. Hg. If vacuum amplifier does not respond as outlined, replace vacuum amplifier.
scientia non olet · About LEMON Manuals