12684225
BOSCH 12684225 Inyector Alta Presión Chevy Malibu Equinox Buick 1.5L Turbo SGE
12668393, 12692283, 0261500624, 0261500625Fast-Actuating Solenoid Multi-Hole Direct Injection Nozzle-200 barEspecificaciones técnicas
| Especificación | Valor |
|---|---|
| Tipo de sistema | Bosch HDEV5.2 Multi-Hole Direct Gasoline Fuel Injector |
| Presión de servicioDato clave | |
| Spray Pattern | Optimized 6-orifice pattern for central combustion ignition |
| Fuel Rail Bolt Torque | 12 N·m (bracket clamping fasteners) |
| High Pressure Pipe Torque | 28 N·m Flare Nut Connection |
| Coil Resistance | 1.5 - 1.9 Ω at 20°C (Direct pulse solenoid control) |
| Códigos de avería frecuentes | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0171 (System Lean Bank 1) |
| Workshop Precaution | Install brand-new Teflon combustion seals using EN-48266 seal expander tool |
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": "Depressurize Fuel Rail & Remove Intake Duct",
- "instruction": "Depressurize fuel system by removing fuel pump fuse and running engine until shutdown. Disconnect battery negative cable."
- },
- {
- "step": 2,
- "title": "Disconnect Fuel Rail Wire Connectors & Retainers",
- "instruction": "Disconnect injector electrical pigtails. Disconnect fuel feed pipe (28 N·m) and remove fuel rail retaining bolts (12 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Renew Teflon Tip Seals",
- "instruction": "Carefully remove injectors from cylinder head bore using EN-47218 remover. Install new Teflon seals and size with calibration sleeve."
- },
- {
- "step": 4,
- "title": "Install Fuel Rail, Torque Bolts & Leak Check",
- "instruction": "Press injectors into cylinder head. Tighten rail bolts to 12 N·m. Torque fuel line nut to 28 N·m. Reconnect battery, prime system and inspect for leaks."
- }
- ]
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.