why is my Ford Mustang S650 (2024-Present) engine making a knocking noise?

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, torque wrench, compression tester, mechanic's stethoscope.
• Ensure the vehicle is parked on a level surface with the engine off and cool.
• Disconnect the battery to avoid any electrical shorts.

2. Engine Oil Inspection

• Remove the oil dipstick and wipe it clean to check the oil level.
• If the oil is low, add the recommended oil type (5W-30 synthetic is common for Mustangs) to the proper level.
• If the oil is dirty or contaminated, proceed to change the oil and filter.

3. Compression Test

• Remove the spark plugs using a socket set.
• Insert the compression tester into each cylinder and crank the engine.
• Record the compression readings; all cylinders should be within the manufacturer's specified range.
• If readings are low, inspect for valve or piston damage.

4. Inspect Timing Chain/Belt

• Remove the engine cover to access the timing components.
• Check for proper tension and alignment of the timing chain/belt.
• If damaged, replace the timing chain/belt according to manufacturer specifications.

5. Reassemble and Test

• Reinstall the spark plugs and torque them to the manufacturer's specifications.
• Reattach the engine cover and reconnect the battery.
• Start the engine and listen for the knocking noise; monitor for any changes.