EJ7E-9F593-AA
BOSCH EJ7E-9F593-AA Iniettore Diretto Ford Mustang Focus RS 2.3 EcoBoost
EJ7Z-9F593-A, 0261500204, CM-5247, 0261500205Laser-Drilled Multi-Hole Symmetrical Direct Injection NozzleLaser-Drilled Multi-Hole Symmetrical Dispersion200 barApplicazioni Veicolo e Motore
Specifiche Tecniche
| Specifica | Valore |
|---|---|
| Injector Generation | Bosch HDEV-5 Solenoid High-Pressure Direct Fuel Injector |
| Operating Rail PressureSpecifica Chiave | |
| Nozzle Spray GeometrySpecifica Chiave | |
| Coil Resistance Value | 1.5 to 2.2 Ohms at 20°C (Low Impedance Peak-and-Hold) |
| Fuel Rail Mounting Bolt Torque | 10 N·m |
| High Pressure Pipe Flare Nut Torque | 25 N·m |
| Tightening Torque | 25 N·m |
| Coppia serraggio staffa | 10 N·m |
| Primary OEM Reference | EJ7E-9F593-AA, EJ7Z-9F593-A, 0261500204, CM-5247 |
| Engine Emission Compliance | Euro 6 / LEV III / Tier 3 Bin 30 |
| Standard Industrial Warranty | 12 Months / Unlimited Mileage |
| Pressione di esercizioSpecifica Chiave |
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
Attrezzatura necessaria: 8mm and 10mm sockets, extensions, and calibrated torque wrench, 17mm line flare wrench for high-pressure fuel pipe union nut, Teflon injector seal installation and resizing cone sleeve tool set, Slide hammer injector removal adapter tool for stuck GDI injectors, Clean engine oil or assembly lubricant for upper O-ring only
- Disconnect vehicle battery negative cable; relieve high-pressure fuel system pressure through low-pressure pump fuse pull and cranking.
- Disconnect electrical wiring harness plugs from all 4 GDI injectors.
- Remove high-pressure metal fuel supply line between high-pressure pump and fuel rail.
- Loosen and remove fuel rail mounting bolts; gently pry fuel rail away from cylinder head evenly.
- Extract injectors from cylinder head bores using slide hammer puller if carbon-locked; label injector positions.
- Clean cylinder head injector bores thoroughly using brass bore brush and vacuum away all carbon dust.
- Install new white Teflon combustion chamber seals onto injector tips using the expansion cone tool; immediately slide resizing collar sleeve over seal for 3 minutes to shrink seal to spec.
- Replace upper fuel rail Viton O-rings and backup rings; lubricate upper O-rings lightly with clean engine oil (keep lower Teflon seal dry).
- Install injectors into cylinder head bores; verify injectors are fully seated in correct orientation.
- Position fuel rail onto injectors; install rail mounting bolts and torque to 10 N·m in progressive sequence.
- Thread high-pressure fuel pipe union nuts by hand; torque pipe nuts to 25 N·m.
- Reconnect wiring harness; crank engine with fuel pump fuse installed and verify zero fuel weeping at rail or cylinder head seams.
- Dry Teflon Rule: Never apply oil, grease, or WD-40 to the lower white Teflon tip seal; lubricants cause Teflon to swell and degrade under combustion heat.
- Resizing Collar Timing: Keep the resizing collar on the newly expanded Teflon seal for at least 3 minutes to restore its factory outer diameter before inserting into the cylinder head bore.
Domande Frequenti (FAQ)
What are the primary symptoms when EJ7E-9F593-AA fails?
Primary symptoms include extended cold engine cranking, severe hesitation under wide-open throttle, rough idle RPM fluctuation, and Diagnostic Trouble Codes P0087 (Fuel Rail/System Pressure Too Low), P0089 (Fuel Pressure Regulator Performance), or P0300 (Random/Multiple Cylinder Misfire).
What is the exact tightening torque for EJ7E-9F593-AA?
The holding flange mounting torque is 10 N·m, and the high-pressure fuel pipe union nut must be torqued to 25 N·m.
Can I reuse the seals when replacing EJ7E-9F593-AA?
No. All high-pressure fuel seals, including Viton O-rings and combustion chamber Teflon rings, are strictly single-use. Reusing compressed seals will cause pressurized fuel leaks or combustion blowby into the cylinder head.
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.