LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1985 >> RX-7 S >> Repair and Diagnosis >> Engine Performance >> System >> Mixture Control System - CARBURETED Models >> Component Testing >> Richer Solenoid Valve Signal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Richer Solenoid Valve Signal

  1. Start the engine and run at idle speed. Connect a voltmeter to the richer solenoid valve terminal and ground, and take reading. Voltage should be 12 volts. Increase the engine speed more than 1500 RPM and then decrease it.
  2. Voltmeter should show below 2 volts for 30 seconds when the engine speed becomes 1100 RPM or less. Disconnect the vacuum sensing tube of the vacuum switch at the idle compensator and take a voltmeter reading. Voltage should be zero.
  3. Reconnect the vacuum sensing tube to the idle compensator. Disconnect the connector for the clutch switch. Depress the clutch pedal and shift into first through fifth gears. Increase the engine speed more than 1500 RPM and then decrease it. Voltmeter should read 12 volts.
scientia non olet · About LEMON Manuals