095000-6980 — Symptoms & Failure Modes
Common symptoms and verified failure modes of a failing Denso 095000-6980 Isuzu 4JJ1-TC 3.0 Common Rail Injector.
High back-leakage from a worn injector drops cranking rail pressure on the 4JJ1, making the engine slow to start, especially when cold.
An out-of-balance injector unevenly fuels its cylinder, producing a shaky idle and audible misfire.
When injector delivery falls outside its correction range the ECU pulls fuel and boost or drops the D-Max into limp mode.
Poor atomisation from a worn nozzle over-fuels the cylinder, producing visible black smoke under load.
A leaking injector causes a pronounced top-end knock on the 4JJ1, often most obvious at idle.
Internal leakage and over-fuelling waste fuel and can trigger fuelling-related fault codes.