Fuel Tank Inspection

WARNING:

Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the "Fuel Line Safety Procedure " to prevent the fuel from spraying.
Fuel may cause irritation if it comes in contact with skin and eyes.
If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
A person charged with static electricity could cause a fire or explosion, resulting in death or serious injury. Before draining fuel, make sure to discharge static electricity by touching the vehicle body.

NOTE:

The rollover valve and the fuel shut-off valve (built into the fuel tank) and also fuel tank leakage are inspected in this inspection.

Perform the following procedure to verify the fuel tank airtightness.

Plug the fuel pump unit pipe, ports B and C.

Courtesy of MAZDA MOTORS CORP.

If there is air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION .)

Plug the fuel pump unit pipe and port B.

Courtesy of MAZDA MOTORS CORP.
Level the fuel tank.
Apply a pressure of 3 kPa {23 mmHg, 0.9 inHg} to port A and wait for a while.
With the pressure still applied, verify that there is air flow from port C and the pressure is 0-3 kPa {0- 23 mmHg, 0-0.9 inHg}.
- If there is no air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION .)
Apply a pressure of -0.5 kPa {-3.8 mmHg, -0.1 inHg} to port A and wait for a while.
With the pressure still applied, verify that there is air flow from port C and the pressure is -0.5-0 kPa {-3.8-0 mmHg, -0.1-0 inHg}.
- If there is no air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION .)
- If there is air flow, place the fuel tank upside down.
Apply a pressure to port A and wait for a while.

Courtesy of MAZDA MOTORS CORP.
With the pressure still applied, verify that there is no air flow from port C.

If there is air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION .)