Chrysler engineers have done a great job. Since its debut (2003), 5.7 Hemi has earned a reputation for its durability and reliability. 5.7 Hemi is one of the most legendary engines all over the world. Though it has a powerful engine, it has some common problems and pitfalls like many other engines.
5.7 Hemi Problems (07 Common Problems)
A user most commonly experiences 07 problems with the 5.7 Hemi engine, including
- Engine overheating
- Engine misfiring
- Ticking noise
- Faulty exhaust manifold
- Multi-displacement system
- Oil leaks
- Poor emission control
1. Engine Overheating
Engine overheating is the most common problem with the Hemi 5.7 engine. Hemi engines do not have enough space to cool down the engine.When you push the limit, the air filtration system fails to keep the engine cool.
Even defective cylinder valves are another cause of overheating.During the summer, an idle engine may cause excessive overheating.
2. Engine Misfiring
Engine misfiring slowly damages the engine. In such conditions, no driver should operate their vehicle. When air and fuel do not mix properly in the combustion chamber, it can cause a misfire.
As a result, you will face problems like power loss, increased fuel consumption, etc. Besides, you have to maintain your engine parts properly. As a result of the lack of proper maintenance on the engine, engine misfiring occurs.
Other factors, such as the failure of ignition coils, lifter roller systems, injectors, etc., can also cause misfires. The best thing you can do for your engine maintains it properly.
3. Engine Ticking Noise
The sound of an engine ticking is something that most people are familiar with from an early age. A faulty exhaust manifold can cause it.What is a faulty exhaust manifold? We’ll talk about it later.
In addition, if the roller lifter is not getting enough oil, it can cause ticking to occur. The roller lifter is connected to the camshaft lobes.
If it can’t get enough fuel, the camshaft doesn’t work properly, and it will create a ticking sound. It is common to hear a ticking sound when the old engine has been running for more than 200k miles and has reached its end of life.
4. Faulty Exhaust Manifold
I mentioned earlier that a faulty exhaust manifold causes the engine to make a ticking noise. This is a common problem because the manifold bolts are connected to the rear cylinders in the engine bay.
These cylinders are very difficult to cool down even though they are always involved in a heating and cooling cycle. That’s why they tend to snap.
When the bolts are broken, the corners of the engine will fail. By adding new bolts, you can fix this problem. It is a relatively easy task if you are an expert.
5. Multi-Displacement System
Multi-displacement engines are known to be one of the most effective methods of reducing fuel consumption. It certainly reduces fuel consumption. This system will shut down the four cylinders to reduce fuel consumption when you drive the car at a steady speed.
But most mechanics dislike this system for its grinding sound. Even aftermarket exhaust replacements won’t be able to eliminate the loud sound you hear when you start the engine. Many drivers complain that the multi-displacement system is faulty and needs to be fixed. Furthermore, it reduces the lifespan of your engine as well.
6. Engine Oil Leaks
This might not seem like a problem, but it is a problem for all off-road vehicles. Your engine parts that are all related to the engine suffer when there are oil leaks. So you must be careful when you go out and check the fuel level.
7. Poor Emission Control
There is no doubt that an emission control system is one of the most important components of a vehicle. It prevents toxic gases from entering the engine. If you have a Hemi Ram 5.7L engine, your vehicle will have poor emission control.As a result, this results in a bad fuel economy, a bad exhaust smell, and so on.
How to Prevent the 5.7 Hemi Problems (05 Tips)
Despite the fact that there are many problems associated with the 5.7 Hemi engine, there are several solutions that can help solve them. The following solutions are:
1. Regular Oil Check
You must regularly check the oil level to prevent the oil leak problem. Besides, you must check the oil viscosity and see how clean the oil is. Neglecting this process may result in a large re-compensation.
2. Regular Engine Checkups
No one can drive an automobile in poor condition. So you have to check the engine regularly before you drive your car. It is important to note that a faulty part may cause damage to other engine parts that are connected to it.
3. Change Spark Plugs
You must check your spark plugs once a year before they corrode. Because if the spark plugs get damaged, they will damage your other engine parts, like piston rings and valve stem seals. In this case, you must change your spark plugs before it’s too late.
4. Use the Right Engine Oil
The oil you use in your 5.7L Hemi must always be of the proper grade and be free of contamination. Then it can generate maximum power. Chrysler always recommends using 5W-20 grade engine oil for the Hemi 5.7L engine. 5W-20 grade engine synthetic oil has a thin viscosity and is easy to mix with the camshaft so that it can work properly.
5. Install an Aftermarket Exhaust
In order to prevent the ticking sound, you will need to change the exhaust system on your vehicle. It will boost your HP and torque and remove the ticking sound. If you have the budget, make this small investment for better performance.
Is 5.7 Hemi Engine Reliable?
You may wonder how reliable the 5.7 Hemi engine is after reading about all these problems with the engine. After you read the pros and cons of this engine, you will see that it is a reliable engine based on its pros and cons.
None of those who own Dodge ram hemi with great 5.7L engines have complained about the engine at all but rather praise it for its performance. When it comes to reliability and durability, you can close your eyes and use this engine without worrying about anything.
My Final Words
There is no such thing as a flawless thing in this world, not even engines. Undoubtedly, the Hemi having 5.7L engine has earned its reputation for its durability and reliability over the years. Besides its flaws, the 5.7 Hemi engine is very reliable, so you should not hesitate to buy a vehicle with this engine.