The 3.0-liter Isuzu 4JJ3 diesel engine has been assembled at a plant in Japan since 2019 and is installed in the popular MU-X SUV, D-Max pickup truck or similar Mazda BT-50. This power unit is essentially a seriously upgraded version of the 4JJ1 engine.
The J-engine line also includes diesels: 4JB1, 4JX1, 4JG2, 4JJ1, 4JJ3.
Specifications
| Production years | since 2019 |
| Displacement, cc | 2999 |
| Fuel system | Common Rail |
| Power output, hp | 190 |
| Torque output, Nm | 450 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 95.4 |
| Piston stroke, mm | 104.9 |
| Compression ratio | 16.3 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain and gears |
| Phase regulator | no |
| Turbocharging | IHI RHS4 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.0 |
| Fuel type | diesel |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Isuzu D-Max 2021) — city — highway — combined |
10.3 6.8 8.1 |
| Engine lifespan, km | ~500 000 |
| Weight, kg | 320 |
The engine was installed on:
- Isuzu D-Max 3 (RG) since 2019;
- Isuzu MU-X 2 (RJ) since 2020;
- Mazda BT-50 III (TF) since 2020.
Disadvantages of the Isuzu 4JJ3 engine
- On specialized forums, he is not particularly scolded and often complains only about vibration loading.
- The fuel system from Denso turned out to be quite demanding on the quality of diesel fuel.
- As always, a lot of trouble is caused by contamination of the particulate filter and the EGR valve.
- There are no hydraulic lifters here and periodically you need to adjust the valve clearance.
does this engine run with an LNT?