2026-10-08 · 5 min read
Mitsubishi Pajero Sport Fuel Pump Malaysia — Diesel
Pajero Sport uses an in-tank low-pressure feed pump and a high-pressure common rail pump. The high-pressure pump is driven by the engine and is extremely sensitive to fuel quality and cleanliness — this is why the fuel filter every 15,000 km is non-negotiable. Contaminated fuel can destroy the high-pressure pump and injectors simultaneously. Symptoms: low power under load, hard starting, fuel rail pressure code P0190.
Pajero Sport Diesel Fuel System
- 4N15 uses a high-pressure common rail diesel injection system — fuel pump feeds the common rail at very high pressure (1,600–1,800 bar)
- Use quality diesel fuel — contaminated or water-mixed diesel damages the high-pressure pump and injectors
- Diesel filter: primary filter has a water separator — drain water trap every 20,000 km or when water-in-fuel indicator lights up