The 2.0-liter Mazda RF7J diesel engine was produced by the company from 2005 to 2010 and was installed on the European versions of the popular models of the third, fifth or sixth series. This power unit was essentially a modernized version of the well-known RF5C diesel engine.
The MZR-CD family also includes diesel engines: RF5C and R2AA.
The engine was installed on:
- Mazda 3 BK in 2006 – 2009;
- Mazda 5 CR in 2005 – 2010;
- Mazda 6 I (GG) in 2005 – 2007;
- Mazda 6 II (GH) in 2007 – 2008.
Specifications
| Production years | 2005-2010 |
| Displacement, cc | 1998 |
| Fuel system | Common Rail |
| Power output, hp | 110 – 145 |
| Torque output, Nm | 310 – 360 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 86 |
| Compression ratio | 16.7 |
| Features | SOHC |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | IHI VJ36 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.8 |
| Fuel type | diesel |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Mazda 6 2006) — city — highway — combined |
7.5 5.1 6.0 |
| Engine lifespan, km | ~280 000 |
| Weight, kg | 197 |
Disadvantages of the Mazda RF7J engine
- Most of the problems are caused by burnouts of the sealing washers under the nozzles.
- Often the return flow of the nozzles also flows, which leads to the mixing of the lubricant with the fuel.
- The main source of oil leaks are cracks in the intercooler flanges.
- During the burning of the particulate filter, diesel fuel can also enter the oil here.
- Other weaknesses in the engine include: SCV valve in the high pressure fuel pump, vacuum pump and mass air flow sensor.
