16790-5R1-004
HITACHI 16790-5R1-004 Högtryckspump Honda Fit Jazz HR-V Vezel 1.5L Earth Dreams
16790-5R1-305, 296100-0080, GE190-025Integrated Electromagnetic Spill Valve Solenoid-200 barPassande fordon & motorer
| Fordon | Motor | Årsmodell |
|---|---|---|
| Honda Fit GK5 1.5L | Honda 1.5L Earth Dreams VTEC Turbo & i-VTEC (L15B7 / L15BA / L15BE / L15B2) | 2015-2020 |
| Honda HR-V 1.5L | Honda 1.5L Earth Dreams VTEC Turbo & i-VTEC (L15B7 / L15BA / L15BE / L15B2) | 2016-2022 |
| Honda Vezel 1.5L | Honda 1.5L Earth Dreams VTEC Turbo & i-VTEC (L15B7 / L15BA / L15BE / L15B2) | 2015-2021 |
Tekniska specifikationer
| Specifikation | Värde |
|---|---|
| Manufacturer | Hitachi Astemo / Honda Genuine Parts |
| Pump Construction | Single Plunger Mechanical Cam-Driven High Pressure Pump |
| Maximum System Pressure | 200 bar (20 MPa / 2900 psi) |
| Driving Element | Camshaft Follower Lifter Tappet on Exhaust Cam |
| Flange Fastener Tightening Torque | 12 N·m M6 Thread Bolts |
| High Pressure Pipe Joint Torque | 28 N·m Flare Nut |
| Vanliga felkoder | P0087 (Fuel Rail Pressure Insufficient), P0171 (Lean) |
| Common Symptom | Long engine crank time in the morning and ticking/rattling noise at idle |
| ArbetstryckHuvudspec. |
Matchande högtryckspump (Bränslekretsmontering)
Fungerar på samma högtrycks-common-railkrets. Vid lågt railtryck (P0087), kontrollera pumpens flöde innan injektorer byts ut.
Monteringsanvisningar
- [
- {
- "step": 1,
- "title": "Relieve Low Pressure Line Pressure",
- "instruction": "Remove fuel pump fuse from under-dash fuse panel. Crank engine for 5 seconds until it stalls, ensuring pressure in line drops to zero."
- },
- {
- "step": 2,
- "title": "Clean Mounting Pocket & Camshaft Tappet",
- "instruction": "Clean cylinder head pump well. Remove roller tappet, inspect for scoring, and lubricate thoroughly with molybdenum engine assembly grease."
- },
- {
- "step": 3,
- "title": "Position Camshaft at Low Base Circle",
- "instruction": "Rotate engine crankshaft clockwise until the high pressure pump driving cam lobe is at its lowest position to ease installation."
- },
- {
- "step": 4,
- "title": "Tighten Flange Bolts Alternately",
- "instruction": "Install pump with fresh engine oil applied to new O-ring. Tighten bolts alternately and evenly in two passes to final torque of 12 N\u00b7m."
- },
- {
- "step": 5,
- "title": "Torque High Pressure Line Flare Nut",
- "instruction": "Connect high pressure line and hand-tighten flare nut. Secure with flare nut wrench to 28 N\u00b7m. Start engine and verify zero fuel seepage."
- }
- ]
Felkoder (DTC) och Diagnosprotokoll
Vanliga diagnosfelkoder (DTC) som aktiveras nar denna common rail-injektor uppvisar slitage, kretsfel eller kalibreringsavvikelse:
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.
Tekniska Diagnos- och Serviceprotokoll
Verifierade verkstadsrutiner, testgränsvärden och serviceinstruktioner för denna komponent.