HIGH PRESSURE FUEL PUMP [SKYACTIV-G]
SECTION 1: HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION
Replacement Part
| High pressure fuel pipe Quantity: 1 Location of use: High pressure fuel pump | Seal rubber Quantity: 1 Location of use: High pressure fuel pump | O-ring Quantity: 1 Location of use: High pressure fuel pump |
| Gasket Quantity: 1 Location of use: Rear housing | — | — |
Oil and Chemical Type
| Engine oil Type: Recommended oil | Silicone sealant Type: TB1217D or equivalent |
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 performing work on the fuel system, discharge static electricity by touching the vehicle body.
Caution - Do not disassemble the high pressure fuel pump.
- Do not damage the sealing surface or the lock part of the fuel pipe.
- Damage or deformation to the end of the high pressure line pipe may cause fuel leakage.
- Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting using a cloth or soft brush, and make sure that it is free of foreign material.
- Complete the “BEFORE SERVICE PRECAUTION”.
- Disconnect the negative battery terminal.
- Remove the plug hole plate.
- Remove the following parts as a single unit.
- MAF sensor/IAT sensor No.1
- Resonance chamber
- Air hose
- Air cleaner cover
- Air cleaner element
- Fresh-air duct
- Air cleaner case
- Disconnect the following parts connectors.
- OCV for No.4 cylinder deactivation
- Coolant control valve
- Intake CMP sensor
- Remove the bracket shown in the figure.
- Remove in the order indicated in the table.
Note
- Only when the high pressure fuel pump (figure (3)) is removed, the rear housing (figure (8)) does not have to be removed.
- Install in the reverse order of removal.
- Complete the “AFTER SERVICE PRECAUTION”.
- Complete the “Fuel Leakage Inspection After High Pressure Fuel Pump Installation”.
| 1 | Quick release connector |
| 2 | High pressure fuel pipe |
| 3 | High pressure fuel pump |
| 4 | Seal rubber |
| 5 | O-ring |
| 6 | Tension collar |
| 7 | Exhaust CMP sensor |
| 8 | Rear housing |
High Pressure Fuel Pipe Removal Note
Caution
• When removing the high pressure fuel pipe, the end of the high pressure fuel pipe may be damaged because the clearance between the high pressure fuel pump and the high pressure fuel pipe is small. Be very careful when handling the end of the high pressure fuel pipe so as not to damage it.
- If the high pressure fuel pump is removed with the high pressure fuel pipe installed, the high pressure fuel pipe and fuel distributor may be damaged because of the excessive force caused by the spring force of the high pressure fuel pump. The high pressure fuel pipe and fuel distributor must be replaced if they are damaged. Always remove the high pressure fuel pipe before removing the high pressure fuel pump.
- Remove the high pressure fuel pipe.
Rear Housing Removal Note
- Disconnect the hose clips shown in the figure.
SECTION 2: HIGH PRESSURE FUEL PUMP INSPECTION
Note
- The following vacuum values are indicated by relative pressure from the fuel pressure sensor.
- Verify that the fuel pressure sensor is normal.
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine on).
- Display PID FUEL_PRES using the M-MDS.
- Verify that PID FUEL_PRES is approx. 10 MPa {102 kgf/cm2, 1450 psi} during idling.
― If it cannot be verified, perform the following inspections. - Perform the fuel line pressure inspection, verify that the fuel pressure value on the low pressure side is normal, then go to the next step.
― If the fuel pressure value is not normal, repair the malfunctioning location using the fuel line pressure inspection, and perform Step 5 again. - Replace the high pressure fuel pump.