A17DTS Diesel Injectors
Compatible with Vauxhall Astra (J), Vauxhall Zafira Tourer (C)
- OEM Tested & Calibrated
- 12-Month Warranty
- Free UK Delivery
Select the correct injector for your A17DTS engine below
Fits Vauxhall Astra (J), Vauxhall Zafira Tourer (C) and more
Top injectors for A17DTS
Compatible Injectors for A17DTS
- OEM Tested
- 12-Month Warranty
- Free UK Delivery
Common problems solved by these injectors
About the A17DTS engine
The A17DTS is a 1.7l cdti common rail diesel engine. This engine uses DENSO diesel injectors.
How Diesel Injectors Are Remanufactured
Watch our 3D walkthrough of the diesel injector remanufacturing process and see how injectors are professionally restored for reliable service.
Vehicles Using A17DTS Engine
| Vehicle | Engine | Years |
|---|---|---|
| Vauxhall Astra (J) injector | 1.7 CDTi | 2009–2015 |
| Vauxhall Zafira Tourer (C) injector | 1.7 CDTi | 2011–2016 |
Common A17DTS Injector Problems
Rough idle and engine vibration
Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
Excessive exhaust smoke
Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
Poor fuel economy
A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
Engine misfire under load
Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
Difficult cold starting
Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.
Loss of power
Gradual power loss across the rev range, particularly above 2500 RPM, can indicate injector flow rate degradation.
Increased diesel knock
Louder than normal combustion noise, especially at idle, can indicate incorrect injection timing due to worn injector internals.
A17DTS Technical Specifications
Displacement
—
Power
—
Torque
—
Fuel System
Common Rail Direct Injection
The A17DTS is a 1.7l cdti common rail diesel engine. This engine uses DENSO diesel injectors.
Engine Intelligence
Vauxhall / Opel / Chevrolet 1.7 CDTi (A17DTS — Astra J, Zafira Tourer, Cruze)
Documented failure modes
- Injector seal leakage — soot build-up, diesel smell and rough running (a recurring 1.7 CDTi issue)
- Fuel contamination or water in the fuel damaging the Denso injectors
- Injector-driver electronics faults that log circuit codes without the injector itself being bad
Diagnostic guidance
- On this platform injector circuit codes frequently trace to the injector driver/ECU or wiring rather than the injector — test the electrical side before condemning hardware
- Inspect injector seals for soot and smell — seal leakage is a documented recurring fault
- Check fuel-filter service history and for fuel contamination before fitting replacements
- Denso injectors carry an ID code — register the new code after fitting
Fitment note: The 1.7 CDTi family spans several generations (Astra H/J era) with different Denso references — always match the reference etched on the injector body.
Related A17DTS Engine Guides
Related Pages
DENSO 1.7L CDTi — browse compatible engines, vehicles, and injectors
Compatible Engines
Compatible Vehicles
Recommended Injector
DCRI300050
DENSO — View product page