Scan for diagnostic trouble codes with an OBD-II scanner
Inspect and replace worn spark plugs
Check and replace faulty ignition coils
Inspect spark plug wires and replace if damaged
Test fuel injectors and clean or replace if needed
Replace clogged fuel filters
Check fuel pressure and repair fuel system issues
Inspect for vacuum leaks and repair damaged hoses or gaskets
Clean or replace the mass airflow sensor if faulty
Check the air filter and replace if dirty
Inspect the throttle body and clean carbon buildup
Test the oxygen sensors and replace if defective
Check engine compression and repair internal engine problems
Inspect the timing belt or timing chain for wear or misalignment
Verify battery and charging system health
Repair damaged wiring, connectors, or grounds
Clear codes and road test after repairs