16611AA810
DENSO 16611AA810 Injecteur Haute Pression Subaru BRZ Toyota GR86 2.4L FA24D
SU003-08670, 297500-1430Precision High-Speed Solenoid Multi-Hole Nozzle-200 barSpécifications techniques
| Spécification | Valeur |
|---|---|
| Type de système | Denso Multi-Hole Direct Gasoline Fuel Injector |
| Pression de serviceSpéc. clé | |
| Spray Pattern | 6-hole laser-calibrated spray targeted at boxer piston crown bowl |
| Fuel Rail Bolt Torque | 19 N·m (holding bracket flanged bolts) |
| High Pressure Pipe Torque | 32 N·m Flare Nut Connection |
| Coil Resistance | 1.7 - 2.1 Ω at 20°C (High-speed pulse driver circuit) |
| Codes défauts fréquents | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0171 (System Too Lean) |
| Workshop Precaution | Replace Teflon combustion seal ring using cone expansion tool before inserting into boxer cylinder head |
Pompe haute pression associée (Ensemble circuit de carburant)
Fonctionne sur le même circuit haute pression Common Rail. En cas de chute de pression (P0087), vérifier le débit de la pompe avant de remplacer les injecteurs.
Conseils de montage
- [
- {
- "step": 1,
- "title": "Depressurize Direct Injection System & Remove Strut Braces",
- "instruction": "Depressurize direct injection circuit via fuel pump fuse pull and crank engine. Unbolt engine bay cross-strut braces to access boxer cylinder heads."
- },
- {
- "step": 2,
- "title": "Unplug Injector Harness & Disconnect Fuel Rail Lines",
- "instruction": "Disconnect direct injection harness connectors. Loosen steel fuel rail flare nuts (32 N·m) and unbolt fuel rail mounting bolts (19 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Install New Teflon Combustion Rings",
- "instruction": "Carefully remove injectors with puller tool. Expand replacement Teflon combustion seals onto nozzle tip and compress with sizing die."
- },
- {
- "step": 4,
- "title": "Seat Injectors, Torque Rail Fasteners & Verify Sealing",
- "instruction": "Push injectors into cylinder head ports. Torque rail bolts to 19 N·m. Tighten steel fuel line flare nut to 32 N·m. Check for fuel leaks on initial startup."
- }
- ]
Codes de Defaut (DTC) & Protocoles de Diagnostic
Codes de defaut diagnostiques (DTC) courants déclenchés lorsque cet injecteur common rail subit une usure, des pannes de circuit ou une dérive d'étalonnage:
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.
Protocoles Techniques de Diagnostic & Réparation
Procédures d'atelier vérifiées, seuils de test et guides d'intervention pour cet ensemble.