The Mazda RF5C 2.0-liter turbo diesel engine was assembled by the company from 2002 to 2005 and was installed only on European versions of the 6 series models and the popular MPV minivan. After a slight modernization in 2005, this power unit received a new RF7J index.
MZR-CD family: RF5C, RF7J, R2AA.
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 |
The engine was installed on:
- Mazda 6 I (GG) in 2002 – 2005;
- Mazda MPV LW in 2002 – 2005.
Disadvantages of the Mazda RF5C engine
- The most famous problem of this diesel engine is the burnout of the sealing washers under the nozzles.
- The return of the injectors can also leak, then the oil will begin to mix with the fuel.
- Often in the motor, the solenoid valves of the vacuum lines fail.
- Engine weaknesses also include the SCV valve in the high pressure fuel pump, the vacuum pump and the mass air flow sensor.
- In versions with a particulate filter, diesel fuel often enters the oil during burning.
Frequently asked questions about the Mazda RF5C
How much power does the Mazda RF5C make?
The Mazda RF5C develops 120 - 135 hp and 310 Nm of torque.
How much oil does the Mazda RF5C take and which one?
Engine oil capacity: 4.8 liters. Recommended oil: 5W-30.
Does the Mazda RF5C have a timing belt or chain?
The Mazda RF5C uses a timing belt.
Is the Mazda RF5C turbocharged?
Yes, the Mazda RF5C is turbocharged (IHI VJ32).
Does the Mazda RF5C need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Mazda RF5C last?
The typical lifespan of the Mazda RF5C is ~270 000 km with proper maintenance.
What is the fuel consumption of the Mazda RF5C?
Mazda 6 2004: city 8.3, highway 5.5, combined 6.5 L/100 km.
What cars was the Mazda RF5C installed on?
Mazda 6 I (GG) in 2002 - 2005; Mazda MPV LW in 2002 - 2005.
What are the common problems of the Mazda RF5C?
The most famous problem of this diesel engine is the burnout of the sealing washers under the nozzles. The return of the injectors can also leak, then the oil will begin to mix with the fuel. All known problems.
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