Note:
- To avoid fuel leaks, do not remove the fuel accumulator pressure sensor and relief valve.
- When removing and installing the fuel accumulator, follow the assembly drawing "Removal and installation of the high pressure fuel pump.
Checking the fuel accumulator
Check the tightness of the fuel accumulator, its absence of damage and deformation.
Replace fuel accumulator if necessary.
Checking the pressure sensor in the fuel accumulator
1. Start the engine and warm it up to normal operating temperature.
2. Using a voltmeter, measure the voltage between the terminals "A" And "IN" sensor connector on the wiring harness side at idle.
- Voltage - about 1.25 V
High pressure fuel line components.
1 - fuel accumulator,
2 - collar,
3, 4 - fuel return hose,
5, 6 - fuel return pipe,
7 - high-pressure fuel pipe for supplying fuel from the high-pressure fuel pump to the fuel accumulator,
8, 15 - tube clamp,
9 - injection pump,
10 - washer,
11 - gasket,
12 - nozzle holder,
13 - nozzle holder bolt,
14 - nozzle,
16, 17, 18 - high-pressure fuel pipe for supplying fuel from the fuel accumulator to the injectors.
If the voltage is out of specification, check the wiring harness. If the wires are OK, replace the fuel accumulator.
3. Stop the engine and wait approximately 3 minutes.
4. Set the ignition switch to the "ON" (without engine start).
5. Using a voltmeter, measure the voltage between the terminals "A" And "IN" sensor connector on the wiring harness side.
- Voltage - 0.494 - 0.506 V
If the voltage is out of specification, check the wiring harness. If the wires are OK, replace the fuel accumulator.