Mitsubishi 4 cylinder diesel engine

Types of Mitsubishi 4-cylinder diesel engines

The Mitsubishi 4-cylinder diesel engine has been popular among customers for a long time. With its robust construction and high-quality materials, it can be used in heavy-duty applications. Because of its durability and reliability, it is a preferred choice for commercial and industrial use. There are different types of Mitsubishi 4-cylinder diesel engines, and they include the following:

• 4D68

  The 4D68 diesel engine was first introduced in the 1980s. It has a four-cylinder construction with a 1.8-liter capacity. The 4D68 engine was designed to provide a good balance between performance and fuel efficiency. Because of its compact and lightweight construction, it is often used in small cars, commercial vehicles, and even in some Mitsubishi trucks. The 4D68 engine was popular for many years before it was discontinued in the early 2000s.

• 4D30

  The 4D30 diesel engine was also introduced in the 1980s. Like the other engines on the list, it has a four-cylinder construction, but its displacement is only 1.5 liters. The 4D30 engine is known for its rugged and robust design, making it a suitable choice for commercial vehicles and light trucks. However, it is less powerful and has a lower torque output compared to the others.

• 4N14

  4N14 is one of the newer diesel engines developed by Mitsubishi. The 4N14 engine is part of the 4N family, which is known for its advanced technology and high performance. Compared to other engines in the 4N family, the 4N14 engine has a smaller displacement of 1.4 liters. The 4N14 diesel engine has a good performance level that is comparable to petrol engines. It is also known for its high fuel efficiency and low emission level. Because of its advanced technology and excellent performance, the 4N14 diesel engine is mainly used in modern vehicles, including passenger cars and sports cars.

• 4D40

  The 4D40 diesel engine is a well-balanced engine with good performance and fuel efficiency. It has a four-cylinder configuration and a displacement of 2.0 liters. The 4D40 diesel engine was first launched in the 1980s and was used in many Mitsubishi vehicles, including the Pajero and Montero series. The 4D40 diesel engine has good performance with decent power and torque output. It is still popular and is often used in some modern vehicles, especially in SUVs and off-road vehicles.

• 4N16

  The 4N16 diesel engine is another member of the 4N family. It has a four-cylinder configuration and a displacement of 1.6 liters. The 4N16 diesel engine was first launched in the 2010s and is often used in small and compact Mitsubishi vehicles. The 4N16 diesel engine has a good balance between performance and fuel efficiency. It also has a compact and lightweight design, making it suitable for modern vehicles that require a small and light engine.

Specification & Maintenance of Mitsubishi 4 Cylinder Diesel Engine

• Engine Oil

  Regular oil changes are essential for the health of a Mitsubishi 4-cylinder diesel engine. Follow the user's manual to know how often to change the oil. Use high-quality engine oil that meets or beats what the manufacturer suggests. This oil keeps the engine parts smooth and working well. Oil filters should also be changed with every oil change. The filter traps dirt and debris to keep the oil clean. Take time to choose a filter from a trusted brand. It should meet the same standards as the OEM part.

• Air Intake and Filter

  The air intake system brings air into the engine for fuel combustion. A good air supply is vital for power and efficiency. Inspect the air intake tubing and connections regularly. Look for cracks or loose fittings that could let unfiltered air enter. Replace any damaged parts. The air filter should also be changed according to the schedule in the owner's manual. A clogged filter restricts airflow, which hurts engine performance. Use an air filter that meets or exceeds OEM specifications. Clean the air intake housing and inlet tube at each filter change. This prevents dirt from getting into the engine.

• Fuel System

  Use high-quality diesel fuel from reputable stations. Avoid cheap fuel that could have contaminants. Change the fuel filter per the maintenance schedule. This usually occurs every 15,000 to 30,000 miles, depending on the engine. The new filter traps impurities to keep the fuel clean going into the engine. When replacing the filter, take care to avoid getting dirt inside the fuel lines. Clean the fuel tank and fuel lines periodically. This prevents debris from clogging the system. A clogged fuel system can cause starting issues and poor engine performance.

• Cooling System

  The cooling system keeps the engine from overheating. Check the coolant level regularly. Top off with the proper type of coolant if needed. Follow the owner's manual for the right coolant specification and mixing ratio. The coolant protects against freezing and boiling. Inspect the hoses, clamps, and radiator for leaks. Replace any damaged parts right away. Also, flush the cooling system and change the coolant as the manual recommends. This removes debris and refreshes the coolant.

• Starting and Stopping

  Don't skip the Mitsubishi 4-cylinder diesel engine startup and shutdown procedures. Always let the engine idle for a few minutes before driving off. This gives the oil time to circulate fully. Also, idle the engine for a few minutes before turning it off. This allows all engine parts to cool gradually. Sudden stops can harm components that are hot and under stress.

• Engine Timing

  Mitsubishi 4-cylinder engines use timing belts or chains to sync valve and piston movement. Timing is critical for smooth operation. If the engine uses a timing belt, replace it per the schedule in the owner's manual. This is usually every 60,000 to 100,000 miles. A worn belt can snap and cause serious engine damage. Timing chains also need periodic inspection. Look for signs of stretching or wear.

• Lubrication

  Grease all moving parts, like the valves and rockers, as the owner's manual recommends. Use the type of grease specified for each component. Proper lubrication prevents excessive wear and keeps everything running smoothly.

• Electrical System

  The electrical system powers the starter, fuel injectors, and ignition. Check the battery voltage and connections. Clean the terminals and tighten any loose cables. Use a wire brush to remove corrosion from the terminals. A dirty battery can cause starting problems. Inspect the spark plugs or glow plugs, depending on the engine type. Replace them if they appear worn or damaged.

How to choose Mitsubishi 4-cylinder diesel engines

• Identify the Needs

  Consider what the engine will be used for and how much power, torque, and fuel efficiency are needed. For heavy tasks like construction, an engine with more power and torque would be better. If the engine is for a vehicle used mainly on highways, fuel efficiency would be a top priority.

• Understand Engine Specifications

  Learn about the different parts of an engine and how they affect performance. Key specs to focus on are the horsepower (the pulling power), torque (the turning power), and fuel efficiency ratings.

• Consider Engine Size and Weight

  The size and weight of the engine are important depending on what it will power. Larger engines weigh more and may not fit in smaller spaces. For vehicles, a lighter engine will improve speed and fuel efficiency.

• Evaluate Emissions

  Check how much pollution the engine emits. Some areas have strict rules on engine emissions to protect the environment. Look for engines that meet or exceed local emission standards.

• Assess Reliability and Durability

  Mitsubishi engines are known for their long-lasting quality, but they still differ in how rugged they are. Think about what will be used to maintain the engine and how much care it will need. If low maintenance is a priority, choose an engine built to last with minimal upkeep required.

• Check Warranty and Support

  Mitsubishi offers a warranty for engine parts and technical help if problems arise. A longer warranty means more protection against defects, and good support makes fixing issues easier. Compare the warranty and support offered by different Mitsubishi engine models before deciding.

• Budget Considerations

  When choosing a Mitsubishi 4-cylinder diesel engine, it's essential to consider the budget. The initial cost of the engine is just one part of the total cost. Other factors include how much fuel it will use, how often it needs maintenance, and its reliability. An engine with a higher purchase price but lower running costs may be more economical in the long run.

How to diy and replace Mitsubishi 4-cylinder diesel engines

Due to their complex nature, replacing or repairing Mitsubishi 4-cylinder diesel engines can be difficult. It is advised that a qualified mechanic or engine specialist be consulted. However, here are a few general steps that can be taken to replace the engine:

• Identify and obtain

  Identify the exact model and specifications of the current engine. This will ensure that the new engine is compatible with the vehicle's systems. A compatible engine replacement is critical for optimal performance and to prevent potential damage to other components.

• Prepare the vehicle

  Prepare the vehicle by clearing out the necessary components. This involves removing the hood, exhaust system, intake system, cooling system, electrical system, and transmission. This step provides enough space to work and ensures that no components are damaged during the process.

• Engine support

  Use an engine hoist or crane to support and lift the engine. This is important during the removal and installation process. Secure the engine with appropriate mounts and slings to ensure safety and prevent accidents.

• Disconnect

  All connections, including electrical, fuel, cooling, and exhaust connections, should be disconnected from the engine. This step is important as it prevents potential leaks, electrical shorts, and damage to the components during the removal process.

• Remove

  Once all the connections have been disconnected, the engine can be removed from the vehicle. Unscrew the engine from the engine mounts and lift it out of the engine bay with the hoist or crane.

• Install

  Install the new engine by following the steps above in reverse. Make sure all connections are secure and the engine is properly mounted to the vehicle.

Q&A

Q1: Are 4-cylinder diesel engines good?

A1: Yes, 4-cylinder diesel engines are good. They are often more fuel-efficient than their gasoline counterparts and offer better torque, making them ideal for heavy loads. These engines are also more durable and long-lasting.

Q2: How long do 4-cylinder diesel engines last?

A2: Typically, 4-cylinder diesel engines can last up to 7-8 years or exceed 300,000 miles with proper maintenance and care. This is longer than petrol engines because of their higher thermal efficiency and sturdier build.

Q3: Do diesel engines require more maintenance?

A3: Generally, diesel engines don't require more maintenance. However, the maintenance costs are slightly higher than that of petrol engines. This is because diesel engines have more expensive parts, like fuel injectors, and the service interval for some components is shorter.

Q4: What are the common problems with 4-cylinder diesel engines?

A4: The most common issues with 4-cylinder diesel engines include hard starting, rough running, and lack of power. These problems are usually caused by faulty glow plugs, dirty diesel or water in the diesel, and a clogged air filter. Other issues include noise and vibration.