The Isuzu 4LE2 is a 2.2 L 4-cylinder direct injection engine rated at 3000 rpm, producing up to 29.7 kW. It powers generator sets from Doosan and Isuzu, including the L20 and IDE-6450A. It holds 8.6 L (2.3 gal) of oil and 3 L (0.8 gal) of coolant.
Also known as: Isuzu 4LE2
| Oil capacity | 8.6 L |
|---|---|
| Coolant capacity | 3.0 L |
| Displacement | 2.2 L |
| Cylinders | 4 |
| Aspiration | Direct Injection |
| Rated speed | 3000 rpm |
| Gross power | 29 kW |
Shared across brands: Doosan, Isuzu
| Code | Meaning |
|---|---|
| F | Battery overdischarge |
| Symptom | Cause |
|---|---|
| Charging failure | Faulty alternator. |
| Low speed driving | Excessive electrical loads - Insufficient battery capacity. |
| Excessive oil consumption | Wrong selection of kind and viscosity. Improper installation of filter and piping. Incorrect injection timing. Incorrect injection pressure. Injection nozzle malfunction. Incorrect valve clearance adjustment. Cylinder compression pressure leakage. Poor cylinder compression pressure. Insufficient air intake amount. Air cleaner clogging. Such as inferior ventilation. |
| Engine overheat | Insufficient coolant amount. Fan belt slippage. Thermostat malfunction. Cooling system defect. Radiator filler cap malfunction. Cooling system interior fouled. Radiator clogging. Engine over-loaded. Air cleaner element clogging. Insufficient ventilator. Stopped coolant flow (high concentration of antifreezer, etc.). Lack of oil. Improper oil - Wrong selection of kind and viscosity. Low oil pressure. High coolant temperature. |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
The Isuzu 4LE2 engine has an oil capacity of 8.6 liters.
The Isuzu 4LE2 has a displacement of 2.2 liters with 4 cylinders.
The Isuzu 4LE2 powers 3 generator set(s), including Doosan L20, Isuzu 4LE2, Isuzu IDE-6450A.