EJ7Z-9F593-A
BOSCH EJ7Z-9F593-A Hogedrukinjector Ford Mustang Focus RS 2.3 EcoBoost
EJ7G-9F593-AA, 0261500203, 0261500204Multi-Hole Laser Drilled Solenoid Actuated Nozzle-200 barTechnische specificaties
| Specificatie | Waarde |
|---|---|
| Systeemtype | Bosch HDEV5 Multi-Hole Solenoid Direct Gasoline Fuel Injector |
| WerkdrukKernspecificatie | |
| 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) |
| Veelvoorkomende foutcodes | 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 |
Passende hogedrukbrandstofpomp (Brandstofcircuitmontage)
Werkt op hetzelfde hogedruk-common-railcircuit. Controleer bij raildrukverlies (P0087) de pompopbrengst voordat u injectoren vervangt.
Montagetips
- [
- {
- "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."
- }
- ]
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.