68318470AA
BOSCH 68318470AA Iniettore Alta Pressione Jeep Wrangler JL Alfa 2.0L Hurricane
68318470AB, 0261500448, 0261500449, 50052349Multi-Hole Laser Drilled Solenoid Actuated Direct Injection Nozzle-200 barApplicazioni Veicolo e Motore
| Veicolo | Motore | Anni |
|---|---|---|
| Jeep Wrangler JL 2.0T | 2.0L GME T4 Hurricane 200kW | 2018-2024 |
| Jeep Grand Cherokee 2.0T 4xe | 2.0L GME T4 Hybrid 280kW | 2022-2024 |
| Alfa Romeo Giulia 2.0T | 2.0L GME MultiAir 206kW | 2017-2024 |
Specifiche Tecniche
| Specifica | Valore |
|---|---|
| Tipo di sistema | Bosch HDEV5 Multi-Hole Direct Gasoline Fuel Injector |
| Pressione di esercizioSpecifica Chiave | |
| Spray Pattern | Asymmetrical 6-orifice pattern engineered for deep chamber penetration |
| Fuel Rail Bolt Torque | 12 N·m (holding bracket fasteners) |
| High Pressure Pipe Torque | 27 N·m Flare Nut Connection |
| Coil Resistance | 1.4 - 1.8 Ω at 20°C (High performance peak-and-hold excitation) |
| Codici guasto tipici | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0172 (Fuel System Rich Bank 1) |
| Workshop Precaution | Install new Teflon combustion tip seals using expanding mandrel and sizing collar |
Pompa alta pressione abbinata (Gruppo circuito carburante)
Funziona sullo stesso circuito ad alta pressione Common Rail. In caso di bassa pressione rail (P0087), verificare la portata della pompa prima di sostituire gli iniettori.
Istruzioni di montaggio
- [
- {
- "step": 1,
- "title": "Relieve Fuel System Residual Pressure",
- "instruction": "Depressurize high pressure fuel system using diagnostic scan tool or fuel pump relay isolation. Disconnect battery negative terminal."
- },
- {
- "step": 2,
- "title": "Disconnect Wiring Harness & Fuel Rail Hard Lines",
- "instruction": "Unclip wiring harness from all four injectors. Loosen the high pressure fuel crossover pipe (27 N·m) and unbolt fuel rail fasteners (12 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Fit New Teflon Chamber Seals",
- "instruction": "Use slide hammer tool to extract direct injectors from cylinder head. Install new blue Teflon seals using calibration guide sleeves."
- },
- {
- "step": 4,
- "title": "Torque Rail Fasteners & Verify High Pressure Seal",
- "instruction": "Seat injectors into cylinder ports. Torque rail bolts to 12 N·m. Tighten steel high pressure line to 27 N·m. Prime fuel system and check for leaks."
- }
- ]
Codici Guasto (DTC) e Protocolli Diagnostici
Codici guasto diagnostici (DTC) comuni generati quando questo iniettore common rail presenta usura, problemi ai circuiti o scostamenti:
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.
Protocolli Tecnici di Diagnosi & Assistenza
Procedure d'officina verificate, valori soglia di test e linee guida operative per questo assieme.