If you hear a tapping or clicking noise coming from your engine or exhaust, it usually indicates a mechanical or exhaust system issue. These noises often point to problems such as worn engine components, low oil pressure, or an exhaust leak. Ignoring them can lead to performance loss or costly repairs if the fault worsens.

What does a tapping or clicking noise mean?

The sound can be caused by moving parts not being lubricated properly, worn components creating clearance, or gases escaping through cracks or leaks. The exact cause depends on whether the noise originates from the engine bay or the exhaust system.

Common causes of tapping or clicking noises

• Low or dirty engine oil
• Worn hydraulic lifters or valve train components
• Loose or damaged exhaust manifold or gasket
• Cracked exhaust pipe or muffler
• Faulty spark plugs or ignition components
• Timing chain or belt issues

Why do you need to fix this problem quickly?

Unresolved tapping or clicking noises may lead to severe damage. For example, valve train problems can cause engine failure, while exhaust leaks may allow harmful gases to enter the cabin. Early diagnosis prevents further wear and expensive repairs.

How do you know when to get it checked?

You should book an inspection if:

• The noise increases with engine speed
• The tapping is loudest on cold start
• You notice reduced performance or rough running
• You smell exhaust fumes inside or outside the car
• The Check Engine Light is illuminated

What happens during an assessment?

A mechanic will:

1. Check engine oil level and condition
2. Listen to pinpoint the source of the tapping or clicking
3. Inspect valve train components and timing system
4. Check exhaust manifold, gaskets, and pipes for leaks
5. Scan the ECU for fault codes
6. Advise on required repairs or replacements

How much does it cost to fix?

Costs vary widely depending on the cause. An oil change may cost $150–$250. Exhaust gasket repairs range from $250–$600. Valve train or timing system repairs may cost $900–$2,500+.

Is it unsafe to drive with a tapping or clicking noise?

Yes. Depending on the cause, driving with this issue could damage the engine or expose you to harmful exhaust gases. The vehicle should be inspected and repaired promptly.