why does my Honda Accord 10th Generation (2018-2022) have a rough start in the morning

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to ensure safety during the repair.

2. Battery Inspection

• Sub-steps:
  • Remove the battery terminals (negative first, then positive).
  • Clean the terminals and battery posts to remove corrosion.
  • Test the battery voltage with a multimeter; it should be above 12.4 volts.
• Tools Required: Multimeter, battery terminal cleaner.

3. Fuel System Check

• Sub-steps:
  • Locate the fuel pump fuse and relay; test for functionality.
  • Inspect the fuel filter for clogs; replace if necessary.
  • Use a fuel pressure gauge to check for proper fuel pressure at the rail.
• Tools Required: Fuel pressure gauge, socket set.

4. Ignition System Replacement

• Sub-steps:
  • Remove the engine cover (if applicable) to access the ignition coils.
  • Remove the spark plugs using a spark plug socket; inspect for wear or fouling.
  • Replace spark plugs with OEM specifications and torque to manufacturer’s specifications.
• Tools Required: Spark plug socket, torque wrench.

5. Air Intake Inspection

• Sub-steps:
  • Remove the air intake duct and inspect the air filter for dirt or blockages; replace if necessary.
  • Check the intake manifold for any vacuum leaks or loose connections.
• Tools Required: Flathead screwdriver, replacement air filter.