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Home/Cars/Genesis/G70/IG (2017-2023)/my Genesis G70 makes a knocking noise when I accelerate, what could it be?

my Genesis G70 makes a knocking noise when I accelerate, what could it be?

Genesis G70 IG (2017-2023)

Severity: mediumDifficulty: medium3-5 hours
3 min read
506 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

Component
Engine
Repair Time
3-5 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before opening the oil drain plug.

Symptoms

  • •Knocking noise during acceleration
  • •Possible loss of power or responsiveness
  • •Vibration felt in the cabin
  • •Engine misfire or rough idle
  • •Unusual smells (e.g., burning oil)

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
  2. 2Inspect the engine and transmission mounts for signs of wear or damage.
  3. 3Check the oil level and condition to ensure adequate lubrication.
  4. 4Examine the drive shaft and CV joints for damage or excessive play.
  5. 5Listen for the noise during a stationary rev-up to isolate whether it comes from the engine or drivetrain.
  6. 6Inspect the exhaust system for loose components that may be rattling.

Solution

Solution

1. Preparation

  • Gather tools and parts needed for the repair.
  • Ensure the vehicle is parked on a level surface, and engage the parking brake.

2. Inspect and Replace Engine and Transmission Mounts

  • Tools Required: Socket set, torque wrench, jack stands
  • Sub-steps:
    1. Raise the vehicle using a jack and secure with jack stands.
    2. Visually inspect the engine and transmission mounts for cracks or deterioration.
    3. If damaged, remove the bolts securing the mounts using a socket set.
    4. Replace with new mounts and torque bolts to manufacturer specifications (consult repair manual for specific torque values).

3. Check and Change Engine Oil

  • Tools Required: Oil filter wrench, oil catch pan, socket set
  • Sub-steps:
    1. Drain the old engine oil by removing the oil drain plug.
    2. Replace the oil filter using an oil filter wrench.
    3. Reinstall the drain plug and fill with new oil as per manufacturer specifications.

4. Inspect and Replace Drive Shaft/CV Joints

  • Tools Required: Socket set, pry bar, torque wrench
  • Sub-steps:
    1. Remove the drive shaft from the vehicle, taking care to mark the orientation for reinstallation.
    2. Inspect CV joints for wear or damage; replace if necessary.
    3. Reinstall the drive shaft, ensuring to torque the bolts to the specified values.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Socket set
  • Torque wrench
  • Oil filter wrench
  • Oil catch pan
  • Jack stands

Parts Required

  • Engine mounts
  • Transmission mounts
  • Engine oil
  • Oil filter
  • CV joints (if damaged)

Additional Information

Component

Engine

Repair Time

3-5 hours

Difficulty

medium

Severity

medium

Tools

6 items

Parts

5 items

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