High Pressure Line Pipe Removal Note

Drain engine coolant. (See ENGINE COOLANT REPLACEMENT ).
Disconnect the high pressure line pipe of the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)

Fig 1: Disconnecting High Pressure Line Pipe Of High Pressure Fuel Pump
Courtesy of MAZDA MOTORS CORP.
1. Fix the joint nut with a wrench on the high pressure fuel pump side as shown in the figure.
2. Loosen the high pressure line pipe installation nut.
Remove the high pressure line pipe.