Isuzu 4JX1 Engine Specs
The Isuzu 4JX1 engine is a four-cylinder diesel engine that was produced by Isuzu Motors Limited. It was first introduced in 1999 and was commonly used in Isuzu’s midsize SUVs and pickup trucks. The 4JX1 engine is known for its durability, reliability, and impressive performance. Let’s take a closer look at its specifications.
Engine Configuration
The Isuzu 4JX1 engine is a 3.0-liter intercooled turbocharged diesel engine. It features a cast iron block and aluminum cylinder head, providing a good balance between strength and weight. The engine has a bore of 95.4 mm and a stroke of 104.9 mm, resulting in a total displacement of 2999 cc.
The 4JX1 engine utilizes a double overhead camshaft (DOHC) configuration, with four valves per cylinder. This design allows for better airflow and improved combustion efficiency, resulting in increased power output and fuel efficiency. The engine also incorporates a common rail direct injection system, which further enhances its performance and reduces emissions.
Engine Oil Specs & Service Intervals
Proper maintenance and regular oil changes are crucial for the longevity and optimal performance of any engine, including the Isuzu 4JX1. Here are the engine oil specifications and recommended service intervals for the 4JX1 engine:
- Engine Oil Type: Isuzu recommends using a high-quality diesel engine oil that meets the API CJ-4 or ACEA E9 specifications. These oils provide excellent protection against wear, deposits, and oxidation.
- Viscosity Grade: The recommended viscosity grade for the 4JX1 engine is typically 5W-30 or 10W-30. However, it’s important to consult the owner’s manual or contact an authorized Isuzu service center for the specific viscosity grade recommended for your vehicle.
- Service Intervals: Isuzu recommends changing the engine oil and oil filter every 5,000 kilometers or 3,000 miles, whichever comes first. Regular oil changes help maintain proper lubrication, cooling, and cleanliness of the engine components.
It’s worth noting that service intervals may vary depending on driving conditions, such as extreme temperatures or heavy-duty use. In such cases, more frequent oil changes may be necessary to ensure optimal engine performance and longevity.
Detailed Engine Specifications
For a more comprehensive understanding of the Isuzu 4JX1 engine’s specifications, refer to the following table:
| Engine Type | 4JX1 |
|---|---|
| Displacement | 2999 cc |
| Configuration | Inline 4-cylinder |
| Bore x Stroke | 95.4 mm x 104.9 mm |
| Valvetrain | DOHC, 4 valves per cylinder |
| Turbocharger | Intercooled |
| Injection System | Common Rail Direct Injection |
| Compression Ratio | 18.5:1 |
| Max Power | 163 hp (120 kW) at 3,800 rpm |
| Max Torque | 280 lb-ft (380 Nm) at 1,800-2,000 rpm |
The Isuzu 4JX1 engine is a reliable and powerful diesel engine that has proven its capabilities in various Isuzu vehicles. With proper maintenance and regular oil changes, this engine can provide years of dependable performance. Remember to always consult the owner’s manual or seek professional advice for specific maintenance requirements based on your vehicle’s usage and conditions.
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