Mazda 6 Service Manual: Nonreturn valve inspection

Mazda 6 Service Manual / Fuel and emission control systems / Fuel system / Nonreturn valve inspection

1. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION.)

2. Siphon the fuel from the fuel tank.

Note

Nonreturn valve is integrated in the fuel tank.
The nonreturn valve is normally closed by the spring force.

3. Verify that the nonreturn valve is closed.

If the nonreturn valve is stuck open and dose not open even when pulled up by a finger, replace the fuel tank.

Fuel tank inspection

Caution Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connec ...

Fuel line pressure inspection

Warning Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death. Fuel can also irritate skin and eyes. To prevent this, always complete the BEFORE REP ...

Other materials:

Mazda 6 Service Manual: Recommendations for Shifting
Upshifting For normal acceleration, Mazda recommends these shift points: For cruising, Mazda recommends these shift points: Downshifting When you must slow down in heavy traffic or on a steep upgrade, downshift before the engine starts to overwork. This reduces the chance of stalling and ...

Mazda 6 Service Manual: Dtc c1145, c1155, c1165, c1175
Caution When attaching the tester lead to the DSC HU/CM connector the SST (49 G066 004) must be used. Diagnostic procedure ...