K24W Engine

Honda K24W (2.4 Earth Dreams) – Experiences, issues, fuel consumption and used-buying tips

Honda is known for its engineering solutions, and the K-series engines are considered one of the best four-cylinder platforms ever made. However, the K24W is not a classic 2000s Honda engine. It is part of the "Earth Dreams" technology, which means it combines a large displacement with direct injection in order to meet stricter emission standards and provide better efficiency.

It is most commonly found in the fifth generation of the Honda CR-V (mainly models for the US, Russian and Asian markets, although they are often imported into Europe as well). Unlike the European “downsized” 1.5-liter turbo engines, this 2.4 naturally aspirated engine offers a different driving feel – linear power delivery, instant throttle response and robustness, but it also comes with specific maintenance requirements brought by direct injection.

In short (TL;DR)

• Timing chain: Uses a chain that is generally reliable but sensitive to poor-quality oil.
• Direct injection: More efficient, but prone to carbon buildup on intake valves.
• No turbo: Fewer parts that can fail, longer-lasting components.
• Fuel consumption: Can be high in city driving (large displacement + heavy body).
• Transmission: Usually paired with a CVT that requires regular fluid changes.
• Recommendation: An excellent choice for those who want the simplicity of a naturally aspirated engine, but with modern technology.

Contents

• Technical specifications
• Reliability and maintenance
• Specific components (costs)
• Fuel consumption and performance
• Additional options and modifications
• Transmission
• Buying used and conclusion

Technical specifications

Parameter	Value
Displacement	2356 cc
Power	135 - 137 kW (184 - 188 hp)
Torque	244 Nm
Engine code	K24W (various versions, e.g. K24W1, K24W9)
Injection type	Direct injection (GDI / Earth Dreams)
Aspiration	Naturally aspirated
Number of cylinders/valves	4 / 16 (DOHC i-VTEC)

Reliability and maintenance

Does this engine have a timing belt or a chain?

The K24W engine uses a timing chain. Honda chains are traditionally durable and designed to last as long as the engine itself, provided that the oil is changed regularly. However, on direct-injection engines, oil contamination with soot can accelerate chain stretch if service intervals are extended too much. The expected chain life is over 200,000–250,000 km with proper maintenance.

What are the most common issues with this engine?

Although the K24W is very reliable, there are specific issues related to the "Earth Dreams" technology:

• Carbon buildup on intake valves: Due to direct injection, fuel does not wash over the intake valves. Over time, carbon deposits accumulate, which can restrict airflow, cause rough idle or power loss. Cleaning is recommended (so-called walnut shell blasting or chemical cleaning) at higher mileage.
• VTC actuator (Variable Timing Control): A common issue on the K-series is a grinding or rattling noise at cold start that lasts 1–2 seconds. This points to a problem with the VTC gear that does not retain oil. While it often does not lead to immediate catastrophic failure, it should be addressed.
• Oil dilution with fuel: Although this was a bigger problem on the 1.5 Turbo engines, 2.4 direct-injection engines can also suffer from fuel getting into the oil pan, especially if driven on short trips in winter where the engine does not reach operating temperature.

At what mileage is the “major service” due?

Since the engine has a chain, the classic “major service” (timing belt replacement) does not exist. Instead, you inspect and replace the serpentine belt, tensioner and water pump, usually at around 100,000 to 120,000 km or as needed when bearing noise appears or the belt shows cracking. The chain is replaced only if there is noticeable rattling or diagnostics show timing misalignment.

How many liters of oil does this engine take and which viscosity is recommended?

The engine takes approximately 4.2 to 4.4 liters of oil (with filter). Honda strictly recommends 0W-20 due to tight tolerances and the variable valve timing system (i-VTEC), as well as for fuel economy. Using thicker oil can affect the operation of the VTC system.

Does it consume oil between services?

In general, the K24W is not known as a heavy oil consumer like some older Honda engines. Consumption of up to 0.5 liters per 10,000 km is considered acceptable and normal, especially during highway driving at higher revs. If it uses more than 1 liter per service interval, this may indicate stuck piston rings (a common issue with poor maintenance) or a problem with the PCV valve.

At what mileage should the spark plugs be replaced?

This engine uses iridium spark plugs. The recommended replacement interval is usually 100,000 to 120,000 km. Do not experiment with cheap plugs; use only NGK or Denso according to factory specifications, as these engines are sensitive to spark quality.

Specific components (costs)

Does this engine have a dual-mass flywheel?

In the fifth-generation CR-V, this engine is paired with a CVT automatic transmission in 99% of cases. Automatic transmissions do not use a dual-mass flywheel in the classic sense (like diesels with manual gearboxes); instead, they have a torque converter and a flexplate. So you do not have the cost of replacing a dual-mass flywheel.

What kind of injection system does it have and are the injectors problematic?

The system is GDI (Gasoline Direct Injection) – fuel is injected directly into the cylinder at high pressure. Injectors are more expensive than conventional ones and more sensitive to fuel quality. They can clog or start leaking, which leads to washing oil off the cylinder walls. Symptoms include rough running and a strong fuel smell in the oil. The price of a single injector is significantly higher than on older engines (varies by market: expensive).

Does this engine have a turbocharger?

No. This is a naturally aspirated engine. No turbo, no intercooler, no complex pressurized hoses. That is a huge advantage for long-term reliability because it eliminates one of the most expensive components to repair.

Does this model have a DPF filter or an EGR valve?

Being a gasoline engine, it does not have a DPF filter. However, depending on the market, newer models may have a GPF (Gasoline Particulate Filter), but the K24W was mostly installed before GPFs became widespread on 2.4 engines. It has a catalytic converter integrated into the exhaust manifold. It also has an EGR system (exhaust gas recirculation) which can get dirty from soot, but this is not as common a failure as on diesels.

Does this engine use AdBlue?

No. AdBlue is used exclusively on diesel engines for exhaust gas treatment. This engine does not require any additional fluids besides fuel, oil and coolant.

Fuel consumption and performance

What is the real-world fuel consumption in city driving?

Be prepared for the reality of a large displacement engine. In a heavy SUV like the CR-V, with all-wheel drive (AWD) and an automatic transmission, real-world city consumption is between 11 and 13 liters per 100 km. In stop-and-go traffic in winter, that figure can go up to 14 liters. This is not a fuel-efficient city car.

Is this engine “lazy” for the weight of the car?

The engine is not lazy, but it needs revs. With 184 hp and 244 Nm, it moves the CR-V body adequately, but as a naturally aspirated engine, peak torque is available only at around 3900 rpm. Combined with the CVT, acceleration is linear and smooth, but without the “kick in the back” you get from turbo engines. For the average driver, there is more than enough power for overtaking, but the engine has to be revved.

How does the engine behave on the highway and at what rpm does it cruise at 130 km/h?

On the open road this engine excels in comfort. Thanks to the CVT, which has a wide ratio range, at 130 km/h the engine runs at relatively low revs, usually around 2200–2500 rpm (depending on road gradient and load). Cabin noise is low and fuel consumption drops to a reasonable 7.5 to 9 liters.

Additional options and modifications

Is this engine suitable for LPG conversion?

This is a complicated question. Due to direct injection, a classic sequential LPG system cannot be installed. A special system for direct-injection engines must be used, which either keeps using 20–30% gasoline while driving (to cool the gasoline injectors) or uses a liquid-phase LPG injection system.

Such systems are significantly more expensive (varies by market: very expensive, often over 1000 EUR) and more complex to tune. Since you still use some gasoline, the payback period is long. If you plan to cover very high mileage, it can pay off, but with the risk of potential issues with the gasoline injectors if the system is not perfectly set up.

How much can this engine be safely tuned (Stage 1)?

Naturally aspirated engines are poor candidates for remapping. A Stage 1 remap on the K24W will give you maybe 5 to 8 hp and a slightly better throttle response. Considering the cost of a quality remap, this is mostly a waste of money. It is better to invest that money in proper maintenance.

Transmission

Which manual and automatic transmissions are paired with this engine?

With the 2.4 Earth Dreams engine in the fifth-generation CR-V, you almost exclusively get a CVT (Continuously Variable Transmission). Manual gearboxes were reserved for the weaker 2.0 gasoline engines or diesels on the European market.

What are the most common issues with the automatic (CVT) transmission?

Honda’s CVTs are better than average (they use “G-Design Shift” logic), but they are not immune to problems. The most common issue is overheating if the car is driven aggressively or used for towing heavy trailers. Symptoms of a failing transmission include “slipping” (revs rise but speed does not increase accordingly), shuddering when taking off, or whining noises.

At what mileage should the transmission be serviced and the fluid changed?

This is the most important point for owners of this model. Although the factory sometimes specifies longer intervals, workshop experience shows that the fluid in the CVT (it uses specific Honda HCF-2 fluid) must be changed every 40,000 to 60,000 km. Old fluid loses its friction properties, which leads to slipping of the metal belt and permanent damage to the transmission. Regular fluid changes are cheap (varies by market: not expensive), while a CVT rebuild is extremely costly.

Buying used and conclusion

When buying a used CR-V with this engine, make sure to do the following:

• Cold start: Insist that the engine be completely cold. Listen for a short rattling/grinding noise (VTC actuator) immediately after startup.
• Test drive: Check how the CVT operates. It should pull away smoothly, without jerks, and under hard acceleration there should be no unusual noises.
• Oil check: Pull out the dipstick and smell the oil. If there is a strong fuel smell, this indicates an oil dilution issue or faulty injectors.
• Diagnostics: Check the Long Term Fuel Trim values to see the condition of the injectors and whether the intake valves are excessively dirty.

Conclusion: The Honda CR-V with the 2.4 (K24W) engine is a fantastic family car for those who do not want the complications of turbos and DPF filters. It offers old-school reliability with modern comfort. Although it uses more fuel in city driving and registration may be more expensive (due to displacement in some countries), the peace of mind this engine provides is often worth the difference in cost. It is ideal for drivers who cover moderate mileage and value durability over outright performance.