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The Dodge HEMI engines, particularly in models from 2012 to 2018, are known for a common issue referred to as the “HEMI tick.” This noise typically originates from the valve lifters and can be a source of concern for many owners. Fortunately, replacing the valve lifter is a feasible repair that can restore the engine’s quiet operation. This guide will provide a step-by-step approach to replacing the valve lifter, specifically part number P56029313AB.
Understanding the HEMI Tick
The HEMI tick is often characterized by a ticking or tapping noise that can be heard from the engine, especially during idle or low RPMs. This sound is primarily caused by the valve lifters not maintaining proper hydraulic pressure. Over time, wear and tear can lead to the failure of these components, necessitating replacement.
Symptoms of a Failing Valve Lifter
- Ticking noise from the engine
- Decreased engine performance
- Check engine light may illuminate
- Rough idling
Tools and Materials Needed
- Socket set
- Torque wrench
- Oil filter wrench
- New valve lifters (Part #P56029313AB)
- Engine oil
- Gasket sealant
- Shop towels
Step-by-Step Repair Process
Step 1: Preparation
Before starting the repair, ensure the vehicle is parked on a level surface. Disconnect the battery to prevent any electrical issues during the repair process. Gather all necessary tools and materials.
Step 2: Remove Engine Covers
Start by removing the plastic engine cover. Use the appropriate socket to unscrew the bolts securing the cover in place. Carefully lift it off and set it aside.
Step 3: Drain Engine Oil
Next, drain the engine oil. Place a drain pan under the oil pan and remove the oil drain plug. Allow the oil to fully drain before replacing the plug.
Step 4: Remove the Valve Covers
Using the socket set, remove the bolts securing the valve covers. Carefully lift the covers off, taking care not to damage the gaskets. Set the valve covers aside for later reinstallation.
Step 5: Access the Valve Lifters
Once the valve covers are removed, you will have access to the valve lifters. Identify the lifters that need replacement based on the ticking noise. You may need to remove the rocker arms to access the lifters fully.
Step 6: Replace the Valve Lifters
Carefully remove the old valve lifters. Install the new lifters (Part #P56029313AB) in their respective positions. Ensure they are seated correctly.
Step 7: Reassemble the Engine
Reinstall the rocker arms and ensure they are torqued to the manufacturer’s specifications. Replace the valve covers with new gaskets if necessary, applying gasket sealant as needed.
Step 8: Refill Engine Oil
Refill the engine with the appropriate type and amount of engine oil. Replace the oil drain plug and ensure it is tightened properly.
Step 9: Reconnect the Battery
Reconnect the battery terminals, ensuring they are secure. Start the engine and listen for any abnormal noises. Allow the engine to idle for a few minutes to ensure proper oil circulation.
Final Checks and Maintenance
After completing the valve lifter replacement, monitor the engine for any signs of the ticking noise returning. Regular maintenance, including oil changes and inspections, can help prolong the life of the valve lifters and prevent future issues.
Conclusion
Replacing the valve lifters in your Dodge HEMI engine can be a rewarding task that restores your vehicle’s performance and quiet operation. By following this guide, you can tackle the repair confidently and effectively. Always consult your vehicle’s service manual for specific torque specifications and procedures.