DENSO
16611-AA720
Özellikleri Gör
SolenoidSubaru Multi-Point Turbo Electronic Fuel Injection (MPI 43.5-psi High-Flow System)Euro 2545
DENSO 16611-AA720 Yakıt Enjektörü 565cc Subaru WRX STI 2.5L EJ257
OEM REFERANSI
16611-AA72A, FJ942, 195500-4430KONTROL VALFİ
12-Hole High-Flow Micro-Atomization DirectorENJEKTÖR MEMESİ
-RAİL BASINCI
3.0 barEMİSYONTier 2 Bin 5 / Euro 4 / Euro 5 / LEV II
GARANTİ12 Ay
02
Uyumlu Araçlar ve Motorlar
| Araç | Motor | Model Yılları |
|---|---|---|
| Subaru WRX STI GRB/GVB/VAB | Subaru Boxer 2.5L Turbo DOHC 16-Valve Horizontal-Opposed 4-Cylinder (EJ257, EJ255) | 2007-2021 |
| Subaru Impreza WRX / Forester XT | Subaru Boxer 2.5L Turbo DOHC 16-Valve Horizontal-Opposed 4-Cylinder (EJ257, EJ255) | 2008-2014 |
| Subaru Legacy GT / Outback XT | Subaru Boxer 2.5L Turbo DOHC 16-Valve Horizontal-Opposed 4-Cylinder (EJ257, EJ255) | 2008-2012 |
03
Teknik Özellikler
| Özellik | Değer |
|---|---|
| Sistem Tipi | Subaru High-Flow Multi-Point Turbo Electronic Fuel Injection |
| Operating Fuel Pressure | 3.0 bar (43.5 psi / 300 kPa nominal regulated differential pressure) |
| Static Fuel Flow Rate | 565 cc/min @ 3.0 bar (53.8 lb/hr) genuine blue injector body |
| Coil Resistance | 11.5 - 12.5 Ohms @ 20°C (High-Impedance Saturated Solenoid) |
| Spray Geometry | 12-Hole High-Flow Dual-Cone Atomization Director |
| Fuel Rail Securing Fasteners Torque | 19 N·m (14 lb-ft) fuel rail mounting bolts |
| Fuel Rail Protector Shield Bolts | 7.5 N·m (66 in-lb) sheet metal safety shields |
| Seals Architecture | Upper Viton Fluorocarbon O-Ring & Lower Intake Manifold Seal Ring |
| Manufacturer | Denso Corporation (Tier-1 OEM for Subaru Corporation) |
| Denso Production Reference | 195500-4430 / 16611-AA720 |
| Çalışma BasıncıTemel Değer |
04
Montaj İpuçları
Püf Noktaları ve Uyarılar:
- Mandatory lower seal ring renewal: Never reuse hardened lower manifold rubber seal rings; boost pressure from the turbo will blow past compromised lower seals, causing unmetered boost leaks and violent lean backfires.
- Prevent cylinder 4 fueling starvation: Cylinder #4 runs hottest on EJ257 engines; ensure injector filter screens are immaculately clean or flow-matched to prevent lean detonation and catastrophic ringland failure.
- Never use petroleum jelly or silicone spray: Lubricate O-rings strictly with clean engine oil or clean assembly lubricant to protect O-ring integrity and lambda sensors.
- Double-check fuel rail safety shields: Reinstall all stamped steel safety shields securely; they protect pressurized fuel rails during side impacts.
05
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
P0087Critical
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
P0201 - P0208High
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.
P0300 / P0301+High
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
P0088High
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
ATÖLYE PROTOKOLLERİ
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.
Atölye Teşhis Protokolü
Teknik Kılavuzu OkuCommon Rail Enjektör Geri Dönüş Testi: Limitler ve Teşhis
COMMON RAIL DİZEL ATÖLYE SOP
Teknik Kılavuzu OkuSıkışmış Enjektör Sökme ve Karbon Temizleme | FuelPartsDB
MONTAJ VE KURULUM PROTOKOLÜ
Teknik Kılavuzu Oku