Isuzu 4EE1 / 4EE2

Isuzu's 1.7 diesel — the 4EE1 and later 4EE2 — in the Mazda 323 and Protegé, and across a long list of Opel and Vauxhall cars as the 1.7 DTi and CDTi.

⚑ It is Isuzu's engine wearing other companies' badges, and that is the reason a Corsa owner and a Protegé owner are looking at the same block. opel-cdti-17 in this catalogue is the same engine's later life, and its material applies to the 4EE2.

The two generations are not interchangeable in diagnosis. The 4EE1 is indirect-injection with a mechanical pump — no rail, no filter, nothing to regenerate. The 4EE2 is common-rail with everything that follows. This catalogue's own era check refused an attempt to treat them as one page, which is how the distinction got written down.

On the 4EE1 the recurring faults are glow plugs, injection pump timing and injector nozzles; on the 4EE2 they are the EGR valve, injectors and, later, the particulate filter.