How does a faulty purge valve affect Changan Karvaan’s fuel efficiency and performance?

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How does a faulty purge valve affect Changan Karvaan’s fuel efficiency and performance?

When the purge valve sticks open o r closed, it can disrupt the air-fuel mixture, leading to poor combustion. Are users noticing lower mileage and poor throttle response as a result?

Sandeep asked on 06 Aug 2025 14:05:40 pm

1 Answer

19 views |

Car Mechanic Expert - on 06 Aug 2025 14:09:34 pm

When the purge valve fails:

It causes an imbalance in the air-fuel mixture

Leads to incomplete combustion

Reduces fuel economy mileage

Causes hesitation in acceleration o r jerking

Many Karvaan users have reported losing 1–2 km/litre in fuel average due to this issue.