why does my Ford Mustang S550 (2015-2023) exhaust smell like gas

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Fuel pressure gauge
• Multimeter
• Cleaning supplies (for MAF sensor)

2. Address Fuel Leaks

• Inspect and replace any damaged fuel lines or leaking components.
• Tighten any loose connections on the fuel injectors and check for proper sealing.
• Replace any faulty fuel injectors if leaking is detected.

3. Adjust Air-Fuel Mixture

• If the O2 sensor readings indicate a rich condition, replace the faulty sensor.
• Clean or replace the MAF sensor to ensure accurate air measurement.

4. Replace Spark Plugs

• Remove the spark plugs using a socket wrench.
• Inspect for fouling and replace with OEM or equivalent parts.
• Torque the new spark plugs to manufacturer specifications (usually around 15-20 lb-ft).

5. Verify Fuel Pressure Regulator

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the ON position (do not start the engine) and check the pressure; it should match manufacturer specifications (typically 39-45 psi for most Mustangs).
• Replace the fuel pressure regulator if pressure is outside the specified range.