Mazda CX-9 Grand Touring 2009 Manual page 817

2008 ENGINE PERFORMANCE Emission System (MZI-3.7) - Mazda CX-9
A checker tab is integrated with the quick release connector for new fuel
hoses and evaporative hoses. Remove the checker tab from the quick
release connector after the connector is completely engaged with the fuel
pipe.
1. Inspect the fuel hose and fuel pipe sealing surface for damage and deformation.
If there is any malfunction, replace it with a new one.
Fig. 38: Identifying Quick Release Connector And Retainer
Courtesy of MAZDA MOTORS CORP.
2. Apply a small amount of clean engine oil to the sealing surface of the fuel pipe.
3. Reconnect the fuel hose straight to the fuel pipe until a click is heard.
NOTE:
4. Lightly pull and push the quick release connector a few times by hand, and then verify that it can move
2.0-3.0 mm {0.08-0.12 in} and is connected securely.
TYPE E INSTALLATION
1. Inspect the fuel hose and fuel pipe sealing surface for damage and deformation.
If there is any malfunction, replace it with a new one.
2. Install the quick release connector.
Insert the fuel pipe straight to the end of the quick release connector.
Push down the retainer using a finger.
If the retainer cannot be pushed down, push the fuel pipe further to the quick release
connector.
3. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected
securely.
2008 Mazda CX-9 Grand Touring
If the quick release connector does not move at all, disconnect it,
verify that the O-ring is not damaged or has not slipped, and then
reconnect the quick release connector.