EJ7Z-9F593-A
BOSCH EJ7Z-9F593-A Inyector Alta Presión Ford Mustang Focus RS 2.3 EcoBoost
EJ7G-9F593-AA, 0261500203, 0261500204Multi-Hole Laser Drilled Solenoid Actuated Nozzle-200 barEspecificaciones técnicas
| Especificación | Valor |
|---|---|
| Tipo de sistema | Bosch HDEV5 Multi-Hole Solenoid Direct Gasoline Fuel Injector |
| Presión de servicioDato clave | |
| Spray Pattern | 6-hole laser-drilled asymmetrical pattern for tumble charge air |
| Fuel Rail Bolt Torque | 21 N·m (holding bracket bolts) |
| High Pressure Pipe Torque | 25 N·m Flare Nut Connection |
| Coil Resistance | 1.4 - 1.8 Ω at 20°C (High performance peak-and-hold circuit) |
| Códigos de avería frecuentes | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0171 (System Lean Under Boost) |
| Workshop Precaution | Discard existing combustion chamber Teflon seals; install new blue Teflon seal kit with expanding mandrel |
Bomba de alta presión compatible (Ensamblaje del circuito de combustible)
Funciona en el mismo circuito de alta presión Common Rail. Al diagnosticar baja presión (P0087), verifique el caudal de la bomba antes de sustituir los inyectores.
Consejos de instalación
- [
- {
- "step": 1,
- "title": "Relieve Residual Fuel Pressure & Remove Intake Pleno",
- "instruction": "Depressurize high pressure fuel rail via diagnostic scan tool or fuel pump fuse isolation. Remove upper engine cover and sound dampener."
- },
- {
- "step": 2,
- "title": "Disconnect Fuel Rail Wiring & Fuel Lines",
- "instruction": "Unclip direct injector wiring harnesses. Unscrew fuel rail cross-over pipe flare nuts (25 N·m) and rail retaining bolts (21 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injector Assembly & Fit Teflon Seals",
- "instruction": "Use slide hammer injector puller tool to lift injectors vertically. Fit new Teflon tip seal and compress with sizing die."
- },
- {
- "step": 4,
- "title": "Torque Rail Bracket & Test For Leaks",
- "instruction": "Seat injectors into cylinder ports. Torque rail bolts to 21 N·m. Tighten fuel pipe to 25 N·m. Prime fuel system and check for odor or seepage."
- }
- ]
Codigos de Falla (DTC) y Protocolos de Diagnostico
Codigos de falla de diagnostico (DTC) comunes que se activan cuando este inyector common rail experimenta desgaste, fallas de circuito o desbalance:
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.
Protocolos Técnicos de Diagnóstico y Servicio
Procedimientos de taller verificados, umbrales de prueba y pautas de servicio para este conjunto.