What Are Signs of Engine Problems?

Published by Marlo Strydom

Common signs of engine problems include a check engine light illuminating on your dashboard, unusual knocking or pinging noises during acceleration, and rough or uneven idling. You might notice a loss of power when climbing hills or during acceleration. Excessive exhaust smoke is another warning sign: blue smoke indicates burning oil, white smoke suggests coolant leaks, and black smoke means too much fuel is burning. Watch for oil spots under your parked car, which indicate leaks. Poor fuel economy often signals engine inefficiency. Read about common causes of engine failure and learn what can be mistaken for a bad engine. For more details, see our guide on early warning signs your engine is going bad.