Home » Can You Change Cam Bearings With the Engine In Place?

Can You Change Cam Bearings With the Engine In Place?

So, you’re thinking about tackling a cam bearing replacement, but the thought of pulling the entire engine makes you want to run screaming? I get it. It’s a daunting task! The good news is, in some cases, it is possible to change cam bearings with the engine still nestled snugly in your car’s engine bay. But before you grab your tools and dive in, let’s explore the ins and outs of this procedure, because it’s not always a walk in the park.

The short answer? It depends. Several factors determine whether you can successfully change cam bearings with the engine in the car. These include:

  • Vehicle Make and Model: Some vehicles offer more accessibility than others. The amount of space around the engine is crucial.
  • Engine Design: Certain engine designs make in-car cam bearing replacement easier (or harder) due to the location of the camshaft and other components.
  • Your Skill Level: Honestly, this isn’t a job for a beginner. It requires precision, patience, and a good understanding of engine mechanics.

If you’re unsure, it’s always best to consult a mechanic or your vehicle’s service manual. Don’t just jump in blindly!

Pro Tip: Before even thinking about this, check your service manual. It will give you the manufacturer’s recommended procedure and any specific warnings. Ignoring this could lead to serious engine damage.

Tools Needed to Change Cam Bearings In-Car

If you’ve determined that you can attempt this repair in-car, you’ll need the right tools. Don’t skimp on quality here; using cheap tools can lead to frustration and even damage.

  • Cam Bearing Installation Tool: This is a must-have. It allows you to precisely install the new bearings without damaging them.
  • Slide Hammer: For removing the old bearings.
  • Assorted Sockets and Wrenches: To remove any necessary components blocking access to the camshaft.
  • Torque Wrench: For properly tightening bolts during reassembly.
  • Cleaning Supplies: Brake cleaner, rags, etc., to ensure a clean working environment.
  • Assembly Lube: To lubricate the new bearings during installation.

Remember, having the right tools makes the job significantly easier and reduces the risk of mistakes.

Step-by-Step: Changing Cam Bearings With the Engine In-Car (General Overview)

Okay, so you’re ready to give it a shot? Here’s a general outline of the process. Keep in mind that this is a simplified overview, and the specific steps will vary depending on your vehicle.

  1. Preparation: Disconnect the battery, drain the coolant, and remove any components obstructing access to the front of the engine (radiator, belts, etc.).
  2. Access the Camshaft: Remove the timing cover, timing chain/belt, and any other necessary components to expose the camshaft.
  3. Remove Old Bearings: Use the slide hammer and appropriate adapter to carefully pull out the old cam bearings. Be gentle!
  4. Clean the Bearing Bores: Thoroughly clean the bearing bores with brake cleaner and a lint-free rag.
  5. Install New Bearings: Using the cam bearing installation tool, carefully press the new bearings into place. Ensure they are properly aligned and seated.
  6. Reassemble: Reinstall all components in the reverse order of disassembly, using the correct torque specifications.
  7. Refill and Test: Refill the coolant, reconnect the battery, and start the engine. Check for leaks and unusual noises.

Important Considerations When Changing Cam Bearings

Before you even think about starting, ask yourself this: Do I really need to replace these bearings? Are they visibly damaged? If not, you might be opening a can of worms for no reason.

Important Note: Cam bearing installation requires extreme precision. If the bearings are not installed correctly, you risk serious engine damage. If you’re not comfortable with this level of precision, it’s best to leave it to a professional.

Risks of Changing Cam Bearings In-Car

Let’s be honest, there are risks involved. Here are a few things to consider:

  • Limited Access: Working in a confined space can make the job more difficult and increase the risk of mistakes.
  • Potential for Damage: Improper installation can damage the bearings, camshaft, or engine block.
  • Time Commitment: This is not a quick job. Be prepared to spend several hours, or even days, on this project.

Weigh these risks carefully before deciding to proceed.

FAQ: Cam Bearing Replacement

Q: How do I know if my cam bearings are bad?

A: Common signs include excessive engine noise (especially a knocking sound), low oil pressure, and metal shavings in the oil.

Q: Can I drive with bad cam bearings?

A: It’s not recommended. Driving with bad cam bearings can cause significant engine damage and potentially lead to complete engine failure.

Q: How much does it cost to have a mechanic replace cam bearings?

A: The cost can vary widely depending on the vehicle and the mechanic’s labor rates. Expect to pay several hundred to over a thousand dollars.

So, can you change cam bearings with the engine in the car? The answer is a qualified “maybe.” It depends on your vehicle, your skill level, and your willingness to take on a challenging task. If you’re unsure, err on the side of caution and consult a professional. Your engine will thank you for it!

Ultimately, the decision is yours. Just remember to do your research, be honest about your abilities, and prioritize safety. Good luck with your project, and may your engine run smoothly for years to come.

Author

  • Hi! My name is Nick Starovski, and I’m a car enthusiast with over 15 years of experience in the automotive world. From powerful engines to smart in-car technologies, I live and breathe cars. Over the years, I’ve tested dozens of models, mastered the intricacies of repair and maintenance, and learned to navigate even the most complex technical aspects. My goal is to share expert knowledge, practical tips, and the latest news from the automotive world with you, helping every driver make informed decisions. Let’s explore the world of cars together!

Back to top