Step-by-step Guide to Repairing the Hemi Tick on 2015-2020 Dodge Challenger and Charger

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The HEMI tick is a common issue faced by owners of the 2015-2020 Dodge Challenger and Charger equipped with the HEMI V8 engine. This article provides a comprehensive step-by-step guide to help you diagnose and repair the HEMI tick, ensuring your vehicle runs smoothly and efficiently.

Understanding the HEMI Tick

The HEMI tick is characterized by a ticking or tapping noise that typically originates from the engine’s valvetrain. This noise can be concerning, but it is important to understand its causes and solutions.

  • Common causes include insufficient lubrication, valve lash issues, or worn components.
  • Identifying the source of the tick is crucial for effective repair.

Tools and Materials Needed

Before starting the repair process, gather the following tools and materials:

  • Socket set
  • Torque wrench
  • Oil filter wrench
  • New oil and oil filter
  • Valve cover gasket
  • Feeler gauge
  • Engine oil additive (if necessary)

Step 1: Diagnose the HEMI Tick

Before attempting repairs, it is essential to diagnose the issue accurately. Follow these steps:

  • Start the engine and listen for the ticking noise.
  • Use a mechanic’s stethoscope or a long screwdriver to pinpoint the source of the sound.
  • Check for any visible oil leaks or signs of wear around the engine components.

Step 2: Change the Engine Oil and Filter

Old or contaminated oil can contribute to the HEMI tick. Changing the oil and filter is a crucial step in the repair process:

  • Warm up the engine for a few minutes to thin the oil.
  • Turn off the engine and allow it to cool slightly.
  • Use an oil filter wrench to remove the old oil filter.
  • Drain the old oil from the engine and replace it with fresh oil.
  • Install the new oil filter and ensure it is properly tightened.

Step 3: Inspect and Replace the Valve Cover Gasket

A worn or damaged valve cover gasket can lead to oil leaks and contribute to engine noise. Here’s how to inspect and replace it:

  • Remove the engine cover to access the valve covers.
  • Inspect the gasket for signs of wear or damage.
  • If necessary, remove the valve cover bolts and take off the valve cover.
  • Replace the old gasket with a new one, ensuring a proper seal.
  • Reinstall the valve cover and torque the bolts to the manufacturer’s specifications.

Step 4: Adjust the Valve Lash

Improper valve lash can cause ticking noises. Adjusting the valve lash is an important step:

  • Consult the service manual for the correct valve lash specifications.
  • Use a feeler gauge to measure the gap between the rocker arm and the valve stem.
  • Adjust the lash as needed by loosening the lock nut and turning the adjustment screw.
  • Recheck the gap after adjustments to ensure accuracy.

Step 5: Add Engine Oil Additive (if necessary)

If the noise persists after completing the above steps, consider using an engine oil additive designed to reduce engine noise:

  • Choose a high-quality engine oil additive specifically formulated for HEMI engines.
  • Follow the manufacturer’s instructions for adding the product to your engine oil.
  • Monitor the engine noise over the next few days to assess the effectiveness.

Step 6: Test Drive and Monitor

After completing the repairs, it is important to test drive your vehicle and monitor the results:

  • Take the car for a short drive and listen for any remaining ticking noises.
  • Check for any oil leaks around the valve covers and oil filter.
  • If the noise persists, further diagnosis may be required.

Conclusion

Repairing the HEMI tick on your 2015-2020 Dodge Challenger or Charger can be a straightforward process if you follow these steps. Regular maintenance and timely repairs can keep your engine running smoothly and enhance your driving experience.