Honda CRX silhouetteCRX

Evaporative Emission Controls [KY]

6-99prose procedure

Applies to KY model.

  1. 1
    Remove the fuel filler cap.
  2. 2
    Start the engine and allow to idle.
  3. 3
    Disconnect #7 hose at the purge control diaphragm valve (on the charcoal canister) and connect a vacuum gauge to the hose.
    If there is no vacuum, check #7 hose for blockage, cracks or disconnected hose, as well as vacuum port for blockage.
    Charcoal canister with the #7 hose disconnected at the purge control diaphragm valve and a hand-held vacuum pump/gauge connected to the hose.
  4. 4
    Disconnect the vacuum gauge and reconnect the hose.
  5. 5
    Connect a vacuum gauge to canister purge air hose.
    Charcoal canister with a vacuum/pressure gauge connected by hose to the canister purge air hose.
  6. 6
    Raise engine speed to 3,500 min-1 (rpm). Vacuum should appear on gauge within 1 minute.
  7. 7
    Remove charcoal canister and check for signs of damage or defects.
  8. 8
    Stop engine. Disconnect upper vacuum hose from canister "PCV" fitting. Connect a vacuum pump to canister "purge" fitting as shown, and apply vacuum. Vacuum should remain steady.
    Charcoal canister with the upper vacuum hose disconnected from the "PCV" fitting and a hand-held vacuum pump/gauge connected to the "purge" fitting.
  9. 9
    Restart engine. Reconnect hose to canister "PCV" fitting. "PURGE" side vacuum should drop to zero.
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