1. Check Engine Warning Light

• Pay attention to the Check Engine light on the dashboard.

• Call 365 Mobile Services technician to scan the OBD-II port to retrieve your diagnostic trouble codes (DTCs) for further investigation.

2. Inspect Belts and Hoses

• Our technicians will look for cracks, fraying, or signs of wear on belts and hoses.

• Replace any damaged components to avoid engine overheating or loss of power.

3. Examine the Air Filter

• Inspect the air filter for dirt and debris.

• Replace the air filter as recommended by the manufacturer, typically every 12,000 to 15,000 miles.

4. Monitor Fluid Levels

• Check coolant, transmission fluid, power steering fluid, and windshield washer fluid levels regularly.

• Top off or replace fluids as needed with the recommended type.

5. Inspect Battery and Charging System

• Test the battery voltage with a multimeter to ensure it’s within the proper range (12.6 volts or higher when fully charged).

• Clean battery terminals and check the alternator’s output to prevent starting issues.

6. Check Spark Plugs and Ignition System

• Remove and inspect spark plugs for wear or fouling.

• Replace spark plugs as specified in the owner’s manual, typically every 30,000 to 100,000 miles depending on type.

• Test ignition coils and wires for proper operation.

7. Listen for Unusual Noises

• Start the engine and listen for knocking, ticking, or other abnormal sounds.

• Investigate and address the source of any unusual noises.

8. Inspect the Exhaust System

• Check for visible damage, rust, or leaks in the exhaust system.

• Listen for loud noises that could indicate a problem with the muffler or catalytic converter.

9. Monitor Engine Performance

• Pay attention to sluggish acceleration, reduced fuel efficiency, or rough idling.

• Diagnose and resolve performance issues promptly.

10. Perform Compression Tests

• Use a compression tester to check engine cylinder pressure.

• Compare results to manufacturer specifications to identify potential issues with valves, pistons, or gaskets.

11. Check Fuel System Components

• Inspect the fuel pump, fuel injectors, and fuel filter for clogs or damage.

• Replace the fuel filter as recommended to ensure proper fuel flow.

12. Inspect the Cooling System

• Check the radiator, water pump, and thermostat for leaks or wear.

• Flush and replace coolant as per the maintenance schedule.

13. Update Engine Software

• Use a diagnostic tool to check for available engine control unit (ECU) software updates.

• Install updates to improve performance and efficiency.

14. Record Maintenance Data

• Keep a log of diagnostic results and maintenance actions.

• Use this data to track trends and identify recurring issues.

15. Schedule Professional Inspections

• Have a 365 Mobile Services technician perform comprehensive engine diagnostics during regular service visits.

• Address any identified issues before they escalate.

By adhering to these preventative diagnostic steps, you can maintain engine health, reduce the risk of breakdowns, and ensure your vehicle runs reliably.