5.7 Hemi and Cam Lifter Replacement Cost. Experiencing an engine misfire code in your 5.7 Hemi? It's possible that one or more lifters have gone bad. Ignoring this issue could lead to substantial long-term costs. This guide outlines the costs involved in replacing 5.7 Hemi lifters.
Before discussing costs, let's emphasize the necessity of replacing bad lifters. Neglecting this problem may result in engine damage, reduced fuel efficiency, and potential breakdowns.
The Average 5.7 Hemi Lifter Replacement Cost
When dealing with the task of lifter replacement for my 5.7 Hemi engine, I took a practical approach to uncover the true cost of this essential maintenance. No one wants to overspend, but it's crucial to understand the expenses involved.
First, I sought out multiple auto shops to collect quotes. The typical expense associated with the replacement of a solitary 5.7 Hemi lifter stood at around $750.
Nevertheless, shop fees varied significantly, spanning from $450 to $1,000 for the initial lifter replacement. Such a wide range in pricing is indeed noteworthy. Therefore, it is imperative to conduct thorough research and explore various options to secure the most favorable deal.
According to my research, the Hemi 5.7-liter V8 engine is equipped with a total of 16 lifters, divided into 8 located in the front and 8 in the rear. If you need to replace all 16 lifters, be prepared for an estimated cost ranging from $1,300 to $1,800 when entrusting this task to a mechanic. To clarify, the cost will increase by approximately $100 for every additional lifter replaced during the same job.
If you're confident in tackling the task yourself, the parts needed for replacing all 16 lifters will come to roughly $500. Don't forget the gaskets, an additional expense ranging from $50 to $250. Your total DIY cost will fall between $600 and $1,000.
What Is The Purpose Of Lifters In An Engine?
These small, cylindrical components, typically crafted from aluminum or iron, are nestled within the lifter galley. Their purpose? To maintain precise valve control, ensuring the engine functions flawlessly.
Lifters operate in a straightforward yet pivotal manner:
- Cam Lobe Interaction: As the cam lobe moves, it applies force to the top of the lifter.
- Pushrod Activation: The lifter, in turn, transmits this force to the pushrod.
- Valve Actuation: With the pushrod in motion, the valve opens, allowing the necessary mixture of fuel and air to enter the engine.
- Swift Return: Once the valve has fulfilled its role, the lifter promptly reverts to its original position, poised for the next cycle.
Engines come in various types, and so do their lifters. These engine-specific lifter types operate uniquely:
- Hydraulic Lifters: These employ oil pressure for valve actuation, ensuring a smooth and efficient operation.
- Mechanical Lifters: In contrast, mechanical lifters rely on spinning gears or wheels to control the valves, known for their precision and durability.
- Roller Lifters: Roller lifters, utilizing a rolling mechanism, minimize friction and optimize performance.
Is The 5.7 HEMI A Big Block?
No, it's not. When we discuss engines, size plays a crucial role. The 5.7-liter HEMI is classified as a small block V8 engine, and I'm here to explain why.
To comprehend this distinction, we must grasp the concept of engine blocks. The fundamental difference between big block and small block engines revolves around the size and weight of their engine blocks. Big block engines feature larger and heavier blocks, while small block engines, as the name implies, have smaller and lighter ones.
Small block engines, like the 5.7 HEMI, offer unique advantages. Their compact size and reduced weight make them versatile, fitting seamlessly into various vehicles. Moreover, their lightweight nature contributes to improved handling and overall performance.
How Do You Know Which Lifters Are Bad?
If you've ever experienced engine trouble or a persistent misfire, you'll understand the frustration it brings. While I'm no car expert, I've encountered my fair share of malfunctioning lifters, and I've learned a thing or two about spotting the culprits. Let me share some practical insights with you.
When it comes to pinpointing problematic lifters, the diagnostic scan is your best tool. It's like the doctor's stethoscope for your vehicle. The technician connects the scan tool to your car's computer system and quickly gains invaluable insights into the engine's health.
The scan helps the technician understand which cylinder(s) are causing the misfire. Armed with this information, they can then proceed to replace the troublesome lifters.
If you're thinking about performing a DIY lifter replacement, it's a good idea to think about incorporating professional-grade engine flush and cleaning products into your approach. These products work effectively in clearing out excess oil and dirt that may be affecting your 5.7 Hemi engine.
This step is particularly crucial if your engine has seen many miles. Over time, the accumulation of gunk can contribute to lifter failure.
Misfire, especially during startup, is a common symptom of failing lifters. If your engine coughs and sputters and the misfire persists even after some running, it's time to pay attention. This could very well be an indication that your lifters are causing trouble.
Cylinder Misfire Code
When you see a cylinder misfire code, you're likely to encounter one of the following codes:
- P0300 – Multiple Cylinder Misfire
- P0301 – Cylinder 1 Misfire
- P0302 – Cylinder 2 Misfire
- P0303 – Cylinder 3 Misfire
- P0304 – Cylinder 4 Misfire
- P0305 – Cylinder 5 Misfire
- P0306 – Cylinder 6 Misfire
- P0307 – Cylinder 7 Misfire
- P0308 – Cylinder 8 Misfire
These codes may appear different, but they all point to the same issue – a cylinder misfire. It's important to recognize that if any of these codes pop up on your vehicle's diagnostic scan, immediate attention is required.
Fortunately, the solution to these cylinder misfire codes is often straightforward. The underlying problem can often be traced back to malfunctioning lifters. Replacing one or more of these lifters can resolve the misfire issues plaguing your engine.
When you come across any of these specific diagnostic trouble codes, it is crucial to arrange for prompt servicing of your vehicle. Delaying can lead to further engine damage and increased repair costs. A qualified technician can diagnose the issue accurately and perform the necessary lifter replacements.
Signs of a Faulty Lifter in Your 5.7 Hemi Engine
Keeping an ear out for strange noises and monitoring your engine's performance are essential for any 5.7 Hemi owner. As soon as any of these symptoms are experienced, it becomes crucial to refrain from neglecting them. So, stay vigilant, and if you suspect an issue, consult a professional mechanic to ensure the continued reliability and performance of your Hemi engine.
1. Engine Knocking, Tapping, or Ticking Noise
One of the telltale signs of a faulty lifter is an unusual noise coming from your engine. If you hear a persistent knocking, tapping, or ticking sound that's more pronounced than usual, it's time to investigate.
2. Rough Idle
A smooth and steady idle is a hallmark of a healthy engine. If your 5.7 Hemi starts idling roughly, as if it's struggling to maintain a consistent RPM, it could be due to a bad lifter.
3. Loss of Power
As a Hemi owner, you're accustomed to the exhilarating power your engine provides. If you notice a sudden drop in power or responsiveness, a malfunctioning lifter might be to blame.
4. Hissing Noise from the Engine
Another auditory clue is a hissing noise emanating from the engine bay. This could be a sign of oil leakage, which can result from a faulty lifter.
5. Engine Misfire
An engine misfire can occur when a lifter fails to maintain proper valve operation. If your engine stumbles, hesitates, or runs unevenly, a bad lifter might be the culprit.
How Long Can You Drive With Bad Lifters?
Usually, you can anticipate driving around 50 to 100 miles before you begin to detect any substantial problems. During this period, you may experience unusual engine noises and reduced performance.
If you push your vehicle past the 100-mile mark with bad lifters, you're taking a considerable risk. Continuing to drive in this condition can lead to severe engine damage. This damage may necessitate a complete engine rebuild or replacement.
The replacement of a 5.7-liter Hemi engine represents a considerable expenditure. The cost can range from $4,000 to $6,000 or even more, depending on various factors.
Factors such as the choice of mechanic, whether they install a new engine or rebuild the existing one, can significantly impact the final bill. Typically, you could budget anywhere from $5,800 to $13,000 for the replacement of an engine.
What Can Happen If I Don’t Replace My Lifters?
Ignoring lifter issues can lead to a cascade of problems within your engine. Now, I'll explain what can happen if you don't replace your lifters, shedding light on the potential consequences.
1. Rough Engine Operation and Misfires
If you neglect lifter replacement, your engine is bound to exhibit rough operation and misfires. These issues can manifest as an unsettling vibration and inconsistent performance, making your vehicle less enjoyable to drive.
2. Loud Knocking and Piston Head Damage
One unmistakable sign of lifter problems is a loud knocking noise emanating from your engine. Ignoring this symptom can lead to piston head damage over time, which is a costly repair.
3. Increased Friction and Component Wear
Lifters come into direct contact with various moving engine parts. When they malfunction, the friction generated can quickly wear down the lifter and surrounding components. Replacing lifters is a cost-effective solution compared to addressing extensive engine damage.
4. Damage to Other Engine Parts
The repercussions of not replacing lifters extend beyond the lifters themselves. Your camshaft, crankshaft, valves, and camshaft cap can also suffer damage. This means a more comprehensive and expensive repair job if lifter issues are left unattended.