The Jaguar AJ34 4.2-liter gasoline engine was produced by the company from 2003 to 2009 and was installed on such popular models as the XK and XJ, as well as the S-Type and its successor XF. On the basis of this unit, a motor was created for Land Rover SUVs under the AJ41 index.
AJ-V8 series: AJ126, AJ27, AJ27S, AJ28, AJ33, AJ33S, AJ34, AJ34S, AJ133, AJ133S.
Specifications
| Production years | 2003-2009 |
| Displacement, cc | 4196 |
| Fuel system | distributed injection |
| Power output, hp | 305 |
| Torque output, Nm | 420 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 90.3 |
| Compression ratio | 11.0 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | VVT at the intake |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.0 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Jaguar XK 2007) — city — highway — combined |
17.1 8.1 11.3 |
| Engine lifespan, km | ~350 000 |
The engine was installed on:
- Jaguar S-Type 1 (X200) in 2004 – 2007;
- Jaguar XF 1 (X250) in 2008 – 2009;
- Jaguar XJ 7 (X350) in 2003 – 2009;
- Jaguar XK 2 (X150) in 2006 – 2009.
Disadvantages of the Jaguar AJ34 engine
- The weak point of this engine is the unreliable phase regulators of the VVT type;
- The motor is aluminum and is afraid of overheating, so keep an eye on the cooling system;
- The crankcase ventilation valve clogs rather quickly, which leads to high oil consumption;
- The search for the culprit of floating engine speeds should start with cleaning the throttle assembly;
- On long runs, antifreeze leaks often occur due to burst pipes.
