how to fix P0300 code in Ford Mustang S650 (2024-Present)?

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, ignition coil puller
• Remove the engine cover, if applicable.
• Carefully disconnect the ignition coil connectors.
• Remove ignition coils using the appropriate socket.
• Inspect spark plugs; replace if worn or fouled (gap to manufacturer specifications).
• Replace ignition coils if they show signs of wear or damage.
• Reinstall ignition coils and reconnect the connectors.

3. Fuel System Check

• Tools Required: Fuel pressure gauge
• Locate the fuel rail and connect the fuel pressure gauge to the Schrader valve.
• Turn the ignition to the "on" position (do not start the engine) to check fuel pressure.
• Compare the reading to manufacturer specifications; if low, check the fuel pump and filter.
• If necessary, replace the fuel filter and inspect or replace the fuel pump.

4. Vacuum System Inspection

• Tools Required: Smoke machine or vacuum gauge
• Inspect all vacuum lines for cracks or disconnections.
• Use a smoke machine to check for leaks in the intake manifold.
• If leaks are found, replace damaged hoses or gaskets.

5. Compression Test

• Tools Required: Compression tester
• Remove spark plugs and install the compression tester in each cylinder.
• Crank the engine and record the pressure readings.
• Compare values; if any cylinder is below specifications, further investigation is needed (possible valve or head gasket issues).