Fuel Line/Quick-Connect Fitting Precautions

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

2003-2004 models: The fuel line/quick-connect fittings assembly connects the fuel rail (A) to the fuel joint hose (B), the fuel joint hose to the fuel joint stay (C), and the fuel line (D) to the fuel feed hose (E), and the fuel feed hose to the fuel tank unit (F).

2005-2006 models: The fuel line/quick-connect fittings assembly connects the fuel rail (A) to the fuel joint hose (B), the fuel joint hose to the fuel feed hose (C), and the fuel feed hose to the fuel line (D), and the fuel line (D) to the fuel feed hose (E), and the fuel feed hose to the fuel tank unit (F).

When removing or installing the fuel pump and fuel tank, it is necessary to disconnect or connect the quick-connect fittings.

Pay attention to the following:

The fuel joint hose (B), fuel joint stay (C), and fuel feed line (D), quick-connect fittings (G) are not heat-resistant; be careful not to damage them during welding or other heat-generating procedures.
The fuel joint hose (B), fuel joint stay (C), and fuel feed line (D), quick-connect fittings (G) are not acid-proof; do not touch them with a shop towel that was used for wiping battery electrolyte. Replace them if they came into contact with electrolyte or something similar.
When connecting or disconnecting the fuel joint hose (B), fuel joint stay (C), fuel line (D), fuel feed hose (E), and quick-connect fittings (G), be careful not to bend or twist them excessively. Replace them if they are damaged.

Fig 1: Precautions Of Fuel Line/Quick-Connect Fitting (2003-04 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Precautions Of Fuel Line/Quick-Connect Fitting (2005-06 Models)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

A disconnected quick-connect fitting can be reconnected, but the retainer on the mating line cannot be reused once it has been removed from the line. Replace the retainer when:

replacing the fuel rails.
replacing the fuel pump.
replacing the fuel filter.
replacing the fuel feed line.
it has been removed from the line.

it is damaged.

FUEL RAILS SPECIFICATIONS

Retainer location	Manufacturer	Retainer color	Piping diameter
Engine compartment	Tokai	Blue green	0.31 in. (8.0 mm)
Fuel tank unit: fuel feed line, fuel tank unit side	Tokai	Orange	0.37 in. (9.5 mm)
Fuel tank unit: fuel feed line, fuel line side	Tokai	Blue green	0.31 in. (8.0 mm)