An engine misfire means one or more cylinders is not contributing normally. It can feel like a rough idle, hesitation, shaking, reduced power, or a flashing check-engine light.
Common signs
- Rough idle or vibration
- Hesitation during acceleration
- Reduced power or poor fuel economy
- Check-engine light, especially a flashing light
What you can check safely
Look for obvious loose connections, damaged intake hoses, or overdue maintenance noted in the owner’s manual. Avoid removing ignition or fuel-system components on a hot engine.
When to stop driving
A flashing check-engine light can indicate a serious active misfire that may damage the catalytic converter. Reduce load and seek prompt professional diagnosis.