my Acura MDX YF3 (2022-Present) has a hard start after filling up with gas, what’s the issue?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to ensure safety while working on the fuel system.

Tools Required:

• OBD-II scanner
• Fuel pressure gauge
• Socket set
• Screwdrivers
• Torque wrench

2. Inspect Fuel Cap

• Remove the fuel cap and inspect for any cracks or damage.
• Clean the cap and the fuel filler neck to ensure a proper seal when refitted.
• Reinstall the fuel cap and listen for a click to ensure it is secured.

3. Check Fuel Pressure

• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition key to the "ON" position (do not start the engine) and check the pressure reading.
• Compare the reading with manufacturer specifications (typically 30-50 psi). If low, proceed to the next steps.

4. Test Fuel Pump

• Locate the fuel pump relay and listen for its activation when the ignition is turned on.
• If no sound is heard, replace the fuel pump relay and retest.
• If the pump is operational, check the voltage at the fuel pump connector with a multimeter.

5. Inspect Fuel Filter and Injectors

• If fuel pressure is low, replace the fuel filter according to manufacturer guidelines.
• For injectors, remove and clean them using an ultrasonic cleaner or replace them if they are clogged or leaking.