LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 1987 >> Civic Wagovan >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Testing >> Constant Vacuum Valve >> Prelude Models Only

Prelude Models Only

  1. Disconnect hose No. 30 from frequency solenoid valve B and connect vacuum gauge to hose. See Figure . Start engine and allow to run at idle speed.
    Fig 1: Checking Constant Vacuum Valve
    G42249
  2. Vacuum reading after engine stabilizes, should be 4-8 in. Hg vacuum. If vacuum is within range, constant vacuum valve is okay. Reconnect hose to frequency valve B. If vacuum stabilizes above or below specified range, replace constant vacuum valve.
scientia non olet · About LEMON Manuals