PY8W-13-250
DENSO PY8W-13-250 Yüksek Basınç Enjektörü Mazda CX-9 CX-5 2.5L Turbo
PY01-13-250A, 297500-1120High-Speed Solenoid Actuated Multi-Hole Nozzle-200 barTeknik Özellikler
| Özellik | Değer |
|---|---|
| Sistem Tipi | Denso Multi-Hole Direct Gasoline Fuel Injector |
| Çalışma BasıncıTemel Değer | |
| 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) |
| Tipik Arıza Kodları | 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 |
Uyumlu Yüksek Basınç Pompası (Yakıt Devresi Grubu)
Aynı yüksek basınçlı Common Rail devresinde çalışır. Düşük basınç (P0087) teşhisinde enjektörleri değiştirmeden önce pompa debisini kontrol edin.
Montaj İpuçları
- [
- {
- "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."
- }
- ]
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
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.
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.