High Pressure Fuel Pump Removal/Installation: Notes

REPLACEMENT PART DESCRIPTION

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.

Fig 1: Checking Fuel Pipe Sealing Surface Dimension
Courtesy of MAZDA MOTORS CORP.
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". (See Before Service Precaution .)
Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the plug hole plate. (See Plug Hole Plate Removal/Installation .)
Remove the following parts as a single unit. (See Intake-air System Removal/Installation .)
- MAF sensor/IAT sensor No. 1
- Resonance chamber
- Air hose
- Air cleaner cover
- Air cleaner element
- Fresh-air duct
- Air cleaner case
Disconnect the wiring harness clips shown in the figure.

Fig 2: Wiring Harness Clips
Courtesy of MAZDA MOTORS CORP.
Disconnect the vacuum hose (intake manifold side). (See VACUUM HOSE REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)] .)
Remove the bolt shown in the figure.

Fig 3: High Pressure Fuel Pump Bolt
Courtesy of MAZDA MOTORS CORP.
Disconnect the following parts connectors.
- OCV for No. 4 cylinder deactivation
- Coolant control valve
- Intake CMP sensor
Remove the bracket shown in the figure.

Fig 4: Bracket And Bolt
Courtesy of MAZDA MOTORS CORP.
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". (See After Service Precaution .)

Complete the "Fuel Leakage Inspection After High Pressure Fuel Pump Installation". (See Fuel Leakage Inspection After High Pressure Fuel Pump Installation .)

Fig 5: High Pressure Fuel Pump Components With Torque Specification

Courtesy of MAZDA MOTORS CORP.

COMPONENT DESCRIPTION

1	Quick release connector (See Quick Release Connector (Fuel System) Removal/Installation .)
2	High pressure fuel pipe (See High Pressure Fuel Pipe Removal Note .) (See High Pressure Fuel Pipe Installation Note .)
3	High pressure fuel pump (See High Pressure Fuel Pump Installation Note .)
4	Seal rubber
5	O-ring
6	Tension collar
7	Exhaust CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION .)
8	Rear housing (See Rear Housing Removal Note .) (See Rear Housing Installation Note .)