Audi TT DDYA Injectors

Audi TT DDYA Overview

The Audi TT with the DDYA VW/Audi/Seat/Skoda 2.0 TDI (EA288) engine was produced between and . This vehicle uses Delphi common rail diesel injectors (primary part number 28565336) operating at fuel pressures up to 2000 bar. The DDYA engine in the Audi TT produces and of torque. When replacing injectors on the Audi TT DDYA, always use new copper sealing washers and torque to manufacturer specifications. Each injector should be coded to the ECU after fitting.

Compatible Injectors

Common Injector Problems in Audi TT

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  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.
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  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.
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  Poor fuel economy — A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
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  Engine misfire under load — Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
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  Difficult cold starting — Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.

Other Engine Codes for Audi TT

Other DDYA Vehicles

Related Pages

Delphi VW/Audi/Seat/Skoda 2.0 TDI (EA288) — browse compatible engines, vehicles, and injectors