Parts for your 1998 Mitsubishi Pajero-Fuel injectors

1998 Mitsubishi Pajero fuel injectors — what they do and how to look after them

Based on technical references including the Mitsubishi Pajero (V20 series) Factory Service Manual (1997–1999), Autodata/Autoinfo service data, and Gregory’s/Haynes repair manuals, the 1998 Mitsubishi Pajero is fitted with fuel injectors. Petrol variants run multi‑point fuel injection (MPI) or, in some markets, GDI direct injection, while the 2.8L 4M40 turbo‑diesel uses mechanically or electronically controlled diesel injectors. So fuel injectors are definitely relevant on this model.

On a 1998 Pajero, the injectors’ job is to meter and atomise fuel so the engine burns cleanly and efficiently. In the petrol 6G72/6G74 engines, the ECU commands each injector to deliver precise pulses for smooth idle, decent power, and tidy fuel economy. On the 4M40 diesel, the pump builds high pressure and the injectors pop at a set opening pressure to produce a fine spray pattern, which is critical for cold starts, torque, and keeping smoke down.

Keeping injectors happy pays off. Petrol injectors can gradually gum up from varnish, leading to rough idle, flat spots, and higher fuel use. Professional on‑car cleaning or ultrasonic bench cleaning can restore flow balance if spray patterns are still good. If electrical coils go open‑circuit or the pintle is worn, replacement is the fix. Expect longer life if quality fuel is used and the fuel filter is changed on time.

Diesel owners should treat injector servicing as routine. On the 4M40, plan pop‑testing and spray‑pattern checks about every 100,000–120,000 km, or sooner if there’s hard starting, knock, haze, or poor economy. Nozzles and sealing washers are wear items