Most Common Dodge 5.7 Hemi Problems. Its Dodge 5.7L HEMI engine is frequently called the 345 HEMI to honor its 345 cubic inches displacement. In addition, its long-running pushrod engine debuted, featuring 345 horsepower on a 2003’s Dodge Ram.
Its 5.7 HEMI remains the same today but was updated to increase performance and fuel efficiency. Overall, it’s an excellent engine that is incredibly efficient and sound.
However, no engine can be flawless, which is valid for the 345 HEMI. In this article, we’ll look at a few common issues with the Chrysler 5.7L V8 HEMI.
- 2003and up Ram Trucks
- 2004- Dodge Durango
- Between 2005 and 2008 Dodge Magnum R/T
- 2006+ Dodge Charger R/T
- 2009+ Dodge Challenger R/T
- 2005+ Chrysler 300C, 300S
- 2007-2009 Chrysler Aspen
- 2005and up Jeep Grand Cherokee
- 2006-2010 Jeep Commander
Chrysler’s 5.7 HEMI engine is worthy of recognition for the long list of popular vehicles and trucks that it has powered for more than two decades. That shows the incredible performance that the motor has achieved.
Writing about the most common engine issues could paint a grim picture. Therefore, we must remind readers and ourselves that every great engine suffers from issues. The 345 HEMI was an underperforming engine; it’s not likely Chrysler or Dodge would have it for this long in their flagship vehicles.
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345 HEMI Update (5.7 Eagle)
2009 In 2009 in 2009, the 5.7L engine was modified to increase efficiency, emissions, and performance. The engine that was revised is known as the 5.7 Eagle. Some of the notable improvements made to the 5.7 HEMI are:
- Variable camshaft timing
- Cylinder head
- Manifolds for intake
- Multi-displacement System (MDS)
Variable Camshaft Timing is Chrysler’s term for variable valve timing. It lets the engine alter or reverse cam timing to achieve optimal performance at any RPM. This 5.7 HEMI cylinder head is updated to increase the flow. Manifolds for intake receive an update as well.
However, it is essential to note that the 5.7 Eagle uses different manifold designs for different models. In addition, Chrysler implemented multi-displacement system technology in the HEMI 345. It lets the engine close four cylinders in certain conditions to boost fuel efficiency and reduce emissions.
These were significant updates overall. However, like all new technology, problems always have to be solved in time. Therefore, some changes could make specific issues more likely to occur on a 5.7L Eagle. We’ll go over this in detail when we go through the typical issues in the following sections.
The Most Frequently-Reported Dodge 5.7 Hemi Problems
Here are some of the most and best common issues which people who own 5.7 Hemi engines have experienced in their vehicles:
Oil Leaks
One should be cautious when making sure that you check the level of oil in your car often. It is because if there is leakage of oil, it can result in adverse effects on the engine’s performance as well as other parts that are linked to the engine. It is one of the issues that could be caused by oil additives rather than just the age of the vehicle.
Rough Idle
Various easily fixed reasons could cause an idle that isn’t as smooth. But, it could cost you some cash when it needs to be fixed promptly due to its impact on the environment and your pockets. A slow idle could cause numerous issues, so avoiding regretting is wise.
Misfire
Nobody wants to drive their vehicle in the event of a malfunction because it could cause damage to the engine. The most frequent issue occurs with 5.7 Hemi engines, but it can be avoided when you know how to identify the cause.
Check Engine Light
It is typically caused by the car’s emissions system and the O2 sensors that can be corrected if you recognize the cause. However, other problems related to this light may indicate a more significant problem with your engine; therefore, make sure to fix it immediately if you see this light.
Noisy Valve Train
If you notice the click, tick, or ticking sound coming in your vehicle, do not fret; this is usually a sign that the valves aren’t shutting and opening quickly. It is possible to look by removing your spark plugs and determining whether they require replacing. Pay attention to the sound to avoid creating more problems for your engine.
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Air Filter, Oil Filter, and Fuel Filter Repair
You should replace the air, oil, and gasoline filters regularly, as dirt may accumulate inside them and create a blockage for your car’s system. It is also recommended to replace the components you utilize for your vehicle, like the spark plugs and belts. It could help stop 5.7 Hemi problems from happening.
Noisy Exhaust
A sound coming from your engine, whether from exhaust or other, shouldn’t be overlooked as it could cause more harm to your vehicle’s system and environmental dangers. It is also recommended to check it promptly, so you don’t need to make costly repairs.
Engine Problems with the Engine
The most frequent issue with 5.7 Hemi engines is oil leaks. The most frequent places for this are the under-engine seals, and the valve covers the front main seal, the rear main seal, and the back part of the pan for transmission.
It’s also possible that you are suffering from at least one leak from the oil pump or a timing cover leak.
To stop this from happening, periodically checking your car’s oil level is recommended to ensure that it’s at a reasonable level.
It is also recommended to be equipped with an oil pressure gauge fitted inside your vehicle so that you can quickly identify the issues and fix them without causing too much injury to your 5.7 Hemi engine.
5.7 Hemi Problems and Tips on how to prevent them
It is depressing for many users of 5.7 Hemi engines to discover these issues since this could lead to costly repairs for your car and other maintenance you may only sometimes want to spend on.
There are a variety of options you can take to stop these issues from occurring:
Conduct regular oil checks
A dirty engine can damage your car’s system, so it is recommended to frequently test the oil’s color and viscosity.
If you find particles of dirt or oil leaky, you must clean them right away so that it doesn’t cause more issues inside the car. Also, it would be best to consider switching to synthetic oils when you would like the benefits of having a clean engine.
Make sure you have regular checkups.
Please don’t overlook the check engine indicator as it could indicate several issues that could be affecting the 5.7 Hemi engine, like having too much carbon and a fire that is not working that could result in more damages and cost for repairs to your vehicle.
Also, it would be best if you were sure to check the belt tension frequently, as this is a frequently overlooked part.
Change Spark Plugs Earlier
You must replace your vehicle’s spark plugs at a time or sooner than you think is necessary, as this may cause wear and tear on the components of your engine, such as the valve stem seals and piston rings, which could cause more severe problems.
It is also recommended to check your spark plugs every year, at a minimum, to be confident that they’re working correctly.
Be sure to use Clean Fuel.
Use clean gasoline with no ethanol because this will prolong the life of your vehicle’s engine and avoid more considerable repair expenses for Hemi engines in the future.
Perform Regular Exhaust Check
Please don’t overlook the crackling or clunking from your vehicle’s exhaust, which could indicate dirt or rust. Be sure to get these components cleaned frequently, so you don’t need to pay hefty amounts for repairs.
Be aware of the signs of Engine Performance Issues.
If you suspect there’s a problem with your car’s engine performance, be sure to have it checked right away so that you don’t need to incur more repairs. Also, you should consider hiring an expert mechanic to examine your 5.7 Hemi engine if the issue persists after completing all of these steps.
This way, you’ll be capable of keeping the 5.7 Hemi engine in good operating condition for an extended period, which means you don’t need to purchase another vehicle shortly due to substantial repair expenses.
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HEMI Humanitarian Issues Common Problems
It’s not a good idea to repeat yourself. This HEMI 5.7L engine can be described as a stunning piece of equipment. The pushrod model is established and has been in use for a good century. Furthermore, it is known that the 5.7 HEMI specifically has been in operation for over two decades.
It’s good that Chrysler, Dodge, and Jeep have used this engine for a long time. However, as with every engine, it’s susceptible to several typical design defects. One of the most notable is an engine tick that could indicate the failure of the lifter roller or lifter for the HEMI 345. It is a significant and costly issue should it occur. It’s more likely to be overblown on the internet.
If not, be on the lookout for any frequent problems with the exhaust manifold bolt for your HEMI engine. It’s usually not an issue of significant problems, but it could be an issue if you have experienced it several times.
MDS can cause problems in the long run, but that’s mostly speculation. Ultimately, 16 spark plugs leave lots of potential for misfires because of worn, old plugs. Ensure you’re on top of routine maintenance and pay attention to the basics.
When it comes to maintenance, take the necessary steps to ensure that your 5.7 engine runs smoothly. The chances are that the well-maintained Chrysler 5.7L HEMI engine will last at least 200,000 miles. Of course, there will be issues due to age and excessive mileage. But any engine is excluded from this rule. Ultimately, the HEMI 5.7 is reliable, robust, fun, and enjoyable.
Final Verdict!
5.7 Hemi engines are known for their reliability and performance, but, as they say, all good things come at the end of their road. There will come a time when your Hemi engine will give you problems that may make it inoperable. This means you need to make some fixes to it.
You may also need to replace your engine with a brand-new model. Don’t let this deter you since there are affordable 5.7 Hemi engines available on the market today. So if your engine requires replacement, get another without spending too much.
Utilize the suggestions above as part of your planning for any issues you could encounter with the engine to be prepared to deal with it and also to be prepared to avoid having to pay for more expensive repairs in the future.