16630-4CL0A
HITACHI 16630-4CL0A Hogedrukpomp Nissan X-Trail Rogue Altima 2.5L QR25DD HPP0021
16630-4CL0B, HPP0021, GDP506, HM10046--200 barTechnische specificaties
| Specificatie | Waarde |
|---|---|
| Part Number / SKU | 16630-4CL0A |
| Manufacturer Brand | HITACHI |
| Component Type | Mechanical High Pressure Fuel Pump (HPFP) |
| Engine Application | Nissan 2.5L DOHC 16V Direct Injection I4 (QR25DD) & 2.0L Direct Injection (MR20DD) |
| WerkdrukKernspecificatie | |
| Mounting Torque (Flange / Bracket) | 11 N-m (97 lb-in) |
| Fuel Line / Rail Torque | 28 N-m (21 lb-ft) |
| Veelvoorkomende foutcodes | P0087, P0088, P0171, P2293 |
Passende hogedrukbrandstofpomp (Brandstofcircuitmontage)
Werkt op hetzelfde hogedruk-common-railcircuit. Controleer bij raildrukverlies (P0087) de pompopbrengst voordat u injectoren vervangt.
Montagetips
- Depressurize Fuel System: Pull fuel pump fuse or disconnect LPFP harness. Crank engine 5-8 seconds until it stalls to drop residual rail pressure below 5 bar.
- Clean Surrounding Cavity: Blow compressed air around cylinder head bore or pump flange cavity to prevent dirt ingress into the fuel rail.
- Lubricate & Fit Seals: Inspect Teflon combustion seals or O-rings. Coat lightly with clean motor oil (do not use grease) to avoid tearing during insertion.
- Torque to Factory Specification: Hand-thread bolts evenly. Tighten mounting fasteners to 11 N-m (97 lb-in), and torque fuel line fittings to 28 N-m (21 lb-ft).
- Prime & Leak Check: Cycle ignition to RUN position 3 times (5 seconds each) to build low-side pressure. Inspect fittings for leaks before starting engine.
Foutcodes (DTC) & Diagnoseprotocollen
Veelvoorkomende diagnostische foutcodes (DTC's) die optreden wanneer deze common rail-injector slijtage, circuitstoringen of kalibratieafwijkingen vertoont:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technische Diagnose- & Serviceprotocollen
Geverifieerde werkplaatsprocedures, testdrempels en richtlijnen voor deze component.