Intro: Ticking noises can sound worrying, but many causes are harmless.
1. Low oil
Engines tick when oil is low.
2. Cold start
Ticking is normal until the engine warms.
3. Fuel injectors
They naturally make a ticking sound.
4. Exhaust leak
A small leak can tick under acceleration.
5. When to worry
If the ticking gets louder, get it checked.
Summary: Most ticking comes from low oil or normal injector noise.