28231014 — Frequently Asked Questions
Verified answers about the Delphi 28231014 2.0 Diesel (4D20) Common Rail Injector (Great Wall Steed / Hover H5 / Haval H6).
What is Delphi injector 28231014?
A Delphi solenoid common-rail diesel injector for the Great Wall / Haval 2.0 4D20 engine. Great Wall OE 1100100-ED01.
Which vehicles use 28231014?
Great Wall Steed (Wingle 5), Hover H5 and Haval H6 with the 2.0 4D20 diesel, roughly 2010-2018.
Is it solenoid or piezo?
It is a Delphi solenoid common-rail injector.
Does 28231014 need coding?
Yes - write the injector trim/IMA code to the correct cylinder with the dealer diagnostic tool when fitting.
What is the OE part number?
Great Wall 1100100-ED01 references Delphi 28231014.
Does it fit the Great Wall Steed sold in the UK?
Yes - the UK-market Great Wall Steed 2.0 TD uses the 4D20 engine; confirm the OE number stamped on your injector.
What are the symptoms of failure?
Rough idle, vibration, hard starting, black smoke, power loss/limp mode and an EML.
Why does my 4D20 run rough?
A worn or leaking injector unbalances fuelling; read live back-leakage data and bench-test the weak cylinder.
What causes these injectors to fail?
Poor fuel filtration, contamination and back-leakage wear - fix the cause first.
Does a remanufactured 28231014 perform like new?
A properly remanufactured injector is bench-tested and recalibrated to the Delphi plan, then coded on fitment.