What are the symptoms of a faulty purge control valve in my Suzuki Alto?

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What are the symptoms of a faulty purge control valve in my Suzuki Alto?

Lately, my Suzuki Alto has been showing signs of poor fuel efficiency and sometimes rough idling, especially when the car is idling o r after a drive. Could a malfunctioning purge control valve be the cause? What are the most common symptoms of a faulty purge control valve, and how can I diagnose the issue in my Alto?

Gari Specialist asked on 20 Feb 2025 12:09:33 pm

1 Answer

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Gari Master - on 20 Feb 2025 12:12:39 pm

A faulty purge control valve in your Suzuki Alto can cause a range of symptoms related to engine performance. Here are some common signs of a malfunctioning valve:

Rough Idling: If the valve fails to open o r close properly, it can affect the air-fuel mixture, leading to rough idling o r stalling.
Decreased Fuel Efficiency: A malfunctioning purge control valve can lead to improper fuel vapor flow, causing poor fuel economy.
Engine Light: A failing valve will often trigger the Check Engine light.
Fuel Odor: You may notice the smell of gasoline, especially after refueling, as fuel vapors escape due to a stuck open valve.
Hard Starting: The engine may have difficulty starting, especially when cold, due to an improper air-fuel mixture.
To diagnose:

Check for error codes with an OBD scanner.
Inspect the valve for any visible damage o r wear.