Mitsubishi 4G19 is a 1.3-liter 16-valve engine that was produced in Japan from 2002 to 2012. This motor was developed for the sixth generation Mitsubishi Colt, but was only put in some markets. It is worth noting that it can easily be confused with another 1.3-liter 4A90 engine, which was installed on the same Colt model during a similar period.
Technical specifications.
| Characteristics | Value |
|---|---|
| Type | Ready |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Definite displacement | 1343 cm³ |
| Cylinder diameter | 75.5 mm |
| Piston stroke | 75 mm |
| Power system | Distributed injection |
| Power | 90 hp |
| Torque | 121 Nm |
| Compression ratio | 10.0 |
| Environmental regulations | Euro 4/5 |
| Weight | 130 kg |
This motor has proven itself to be a reliable and easy to maintain unit. However, like any other motor, it has both its advantages and disadvantages.
The pros and cons of the Mitsubishi 4G19 engine
Plusses:
- Simple and reliable design.
- Availability of inexpensive contract engines on the secondary market.
- The presence of hydrocompensators in the cylinder head, which eliminates the need to adjust the valve clearances.
Minuses:
- Fast wear of the throttle plate.
- For 150 000 km, the problem with increased oil consumption is possible.
- Long-lasting ignition coils.
- Breakage of the timing belt can lead to valve damage.
The technical characteristics of the engine meet the standards of its time, but owners face a number of common problems.
Problems and maintenance features
The main problems that can occur with the Mitsubishi 4G19 include:
- Oil consumption. Oil consumption is usually apparent by mileage of 150,000 kilometers. This is caused by the thin oil rings seizing up, which can sometimes be remedied by cracking, but more often requires ring replacement.
- Throttle valve wear. This is a typical problem for Orion series engines, manifested in unstable idle speed.
- Transmission timing belt failure. By regulation, the timing belt should be replaced every 90,000 kilometers, but premature breakage can occur, which can lead to serious valve train damage.
- Problems with the ignition system, coils and plugs, especially in conditions of severe frost.
Repairability and maintenance
The 4G19 engine is relatively easy to repair, which allows many procedures to be carried out independently. For example, replacing the timing belt or cleaning the EGR valve is possible without going to a service center. However, it is important to follow maintenance procedures to extend engine life.
| Maintenance item | Periodicity |
|---|---|
| Oil service | 15,000 km |
| Oil filter | 15,000 km |
| Air filter | 30,000 km |
| Spark plugs | 30,000 km |
| Fuel filter | 120,000 km |
| Replacement of timing belt | 90,000 km |
| Coolant | 60,000 km or every 4 years |
The engine is equipped with a belt-driven timing system and it is important not to delay its replacement, because if the belt breaks, the valves are bent.
Cleaning the EGR valve is also among the frequent works, as this element is prone to clogging. Cleaning does not require any special skills or tools, making this procedure affordable to perform in a garage.
How good is the Mitsubishi 4G19?”
The Mitsubishi 4G19 engine is a great option for those looking for a reliable and unpretentious powertrain. It requires little maintenance and is capable of lasting up to 300,000 kilometers with proper care. However, to ensure its longevity, it is important to replace the timing belt in time, clean the EGR valve and monitor the condition of the throttle valve.