Civic L4-1.8L (2006)
8. Remove the quick-connect fitting cover (A).
9. Check the fuel quick-connect fitting for dirt, and clean it if needed.
10. Place a rag or shop towel over the quick-connect fitting (A).
11. Disconnect the quick-connect fitting (A): Hold the connector (B) with one hand, and squeeze the retainer tabs (C) with the other hand to release
them from the locking tabs (D). Pull the connector off.
NOTE:
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Be careful not to damage the line (E) or other parts.
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Do not use tools.
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If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily,
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Do not remove the retainer from the line; once removed, the retainer must be replaced with a new one.
12. After disconnecting the quick-connect fitting, check it for dirt or damage.
13. Reconnect the negative cable to the battery, then do this:
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Enter the anti-theft code for the audio or the navigation system (if equipped).
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Set the clock.