High Pressure Fuel Pump Inspection
WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- The following vacuum values are indicated by relative pressure from the fuel pressure sensor.
- Verify that the fuel pressure sensor is normal. (See FUEL PRESSURE SENSOR INSPECTION .)
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off).
- Select the "FUEL_PRES", "LOAD" and "RPM" PIDs on the M-MDS. (See
ON-BOARD DIAGNOSTIC TEST
.)CAUTION:
- If the engine is run at a high speed, it could be damaged. When racing the engine, be careful not to increase the engine speed suddenly.
- After the "LOAD" PID is 60% or more
while the engine is raced with the accelerator pedal fully depressed, verify that the "FUEL_PRES" PID is approx. 15.0 MPa {153 kgf/cm 2
, 2176 psi}
.
- If not as specified, replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)