Engine Mazda RF5C

From 2002 to 2005, the company assembled the Mazda RF5C 2.0-liter turbo diesel engine, which was exclusive to European versions of the 6 series models and the well-liked MPV minivan. This power unit was given a new RF7J index in 2005 following a minor modernization.

Engine Mazda RF5C 293x300 - Engine Mazda RF5C

The RF7J and R2AA diesel engines are also part of the MZR-CD family.

The engine was mounted on:

  • Mazda 6 I (GG) in 2002 – 2005;
  • Mazda MPV LW in 2002 – 2005.

Specifications

Production years 2002-2005
Displacement, cc 1998
Fuel system Common Rail
Power output, hp 120 – 135
Torque output, Nm 310
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 86
Piston stroke, mm 86
Compression ratio 18.3
Features SOHC
Hydraulic lifters no
Timing drive belt
Phase regulator no
Turbocharging IHI VJ32
Recommended engine oil 5W-30
Engine oil capacity, liter 4.8
Fuel type diesel
Euro standards EURO 3
Fuel consumption, L/100 km (for Mazda 6 2004)
— city
— highway
— combined
8.3
5.5
6.5
Engine lifespan, km ~270 000
Weight, kg 195

Disadvantages of the Mazda RF5C engine

Burnout of the sealing washers beneath the nozzles is this diesel engine’s most well-known issue.
Additionally, the injectors’ return may leak, allowing the oil to start combining with the fuel.
The vacuum lines’ solenoid valves frequently malfunction in the motor.
The vacuum pump, the mass air flow sensor, and the SCV valve in the high pressure fuel pump are additional engine weaknesses.
Diesel fuel frequently gets into the oil while burning in models with a particulate filter.

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