Why does my Suzuki Every produce a rotten egg smell during drives?

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Why does my Suzuki Every produce a rotten egg smell during drives?

I’ve noticed a strong, unpleasant rotten egg smell from the exhaust of my 2014 Suzuki Every, especially after longer drives. A few people said it could be a sign of catalytic converter failure. What causes this smell, and how can I confirm if the catalytic converter is the real issue?

Gari Specialist asked on 30 May 2025 17:24:48 pm

1 Answer

24 views |

Gari Master - on 30 May 2025 17:29:28 pm

The rotten egg smell sulfuric smell usually comes from hydrogen sulfide gas not being properly converted inside the catalytic converter. This often means the converter is failing, o r the engine is burning rich fuel too much fuel, not enough air.

Common causes:
Faulty catalytic converter

Over-rich fuel mixture bad O2 sensor, dirty air filter, leaking injectors

Poor-quality fuel with high sulfur content

What to do:

Use better fuel

Scan for oxygen sensor errors

Consider cleaning o r replacing the catalytic converter if smell persists