Exhaust Leak Symptoms and Why They're Dangerous

An exhaust leak might start as a slightly louder engine, but it can become a safety issue if fumes start getting into the car.

Symptoms of an exhaust leak

• Louder engine or exhaust noise, especially when accelerating

• A ticking or tapping sound, often from a leaking exhaust manifold

• Smell of exhaust fumes inside the cabin

• Vibration in the floor or pedals

• Worse fuel economy

• Check engine light, as leaks near oxygen sensors affect their readings

• Rattling from underneath, often loose heat shields

Why exhaust leaks happen

• Rust, especially in coastal areas and older vehicles

• Cracked exhaust manifolds from heat cycles

• Failed gaskets

• Broken hangers and mounts

• Damage from speed bumps, potholes and rough roads

The carbon monoxide danger

Exhaust gas contains carbon monoxide, which you can't see or smell. If it gets into the cabin, it can cause headaches, dizziness, nausea, tiredness and, in high amounts, unconsciousness.

If you smell exhaust in the car or feel unwell while driving:

1. Open the windows

2. Stop the car somewhere safe and get fresh air

3. Have the exhaust checked before driving again

Never sit in a parked car with the engine running in a closed garage.

Getting it fixed

Small leaks can sometimes be fixed by replacing a gasket, clamp or hanger. Rusted pipes or cracked manifolds may need replacing. Fixing leaks early also protects oxygen sensors and helps fuel economy.

Need help with this? RCJ Mobile Mechanics comes to you in Portmore, Spanish Town, Kingston, St. Andrew and across St. Catherine. Call or WhatsApp (658) 207-6565 or book a mechanic online.