PY8W-13-250
DENSO PY8W-13-250 Injector Înaltă Presiune Mazda CX-9 CX-5 2.5L SkyActiv-G
PY01-13-250A, 297500-1120High-Speed Solenoid Actuated Multi-Hole Nozzle-200 barSpecificații tehnice
| Specificație | Valoare |
|---|---|
| Tip sistem | Denso Multi-Hole Direct Gasoline Fuel Injector |
| Presiune de lucruSpecificație de bază | |
| Spray Pattern | Multi-hole asymmetrical fan pattern optimized for high compression ratio |
| Fuel Rail Bolt Torque | 10 N·m (holding bracket flanged fasteners) |
| High Pressure Pipe Torque | 25 N·m Flare Nut Connection |
| Coil Resistance | 1.8 - 2.2 Ω at 20°C (High performance peak-and-hold drive) |
| Coduri de eroare frecvente | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0171 (System Too Lean Bank 1) |
| Workshop Precaution | Replace Teflon combustion chamber seal ring and sizing collar prior to cylinder head installation |
Pompă de înaltă presiune compatibilă (Ansamblu circuit combustibil)
Funcționează pe același circuit de înaltă presiune Common Rail. La cădere de presiune (P0087), verificați debitul pompei înainte de a înlocui injectoarele.
Instrucțiuni de montaj
- [
- {
- "step": 1,
- "title": "Depressurize Fuel Rail & Remove Intercooler Charge Piping",
- "instruction": "Depressurize fuel injection system via fuel pump fuse pull. Remove top-mount intercooler and intake charge tubes to access the center fuel rail."
- },
- {
- "step": 2,
- "title": "Disconnect Direct Injector Harness & Fuel Rail Lines",
- "instruction": "Unplug injector electrical connectors. Disconnect high pressure steel fuel rail line (25 N·m) and unbolt fuel rail mounting bolts (10 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Fit New Teflon Chamber Seals",
- "instruction": "Carefully remove injectors with puller tool. Fit new Teflon chamber seals using the installation mandrel and compression die."
- },
- {
- "step": 4,
- "title": "Torque Rail Fasteners & Verify Pressure Integrity",
- "instruction": "Press injectors into cylinder head. Tighten rail bolts to 10 N·m. Torque steel high pressure line to 25 N·m. Start engine and verify zero fuel leakage."
- }
- ]
Coduri de Eroare (DTC) si Protocoale de Diagnostic
Coduri comune de eroare de diagnosticare (DTC) declansate atunci cand acest injector common rail sufera uzura, defectiuni de circuit sau abateri:
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.
Protocoale Tehnice de Diagnosticare & Service
Proceduri verificate de atelier, praguri de testare și standarde de intervenție pentru acest ansamblu.