How often is the solenoid valve of automobile carbon canister replaced (how often is the solenoid valve of Haval h6 carbon canister replaced)

How often is the solenoid valve of automobile canister replaced (how often is the solenoid valve of Haval h6 canister replaced)? There is no fixed period. By measuring the resistance of the carbon canister solenoid valve, the state of the carbon canister solenoid valve can be judged. If the value does not meet the standard, the solenoid valve needs to be replaced. If there are symptoms such as frustration and gasoline smell, it is necessary to check whether the carbon canister needs to be replaced if the investigation fails. Working principle of carbon canister: After the engine is turned off, gasoline vapor and fresh air are mixed in the canister and stored in the activated carbon canister. When the engine is started, the solenoid valve installed between the activated carbon canister and the intake manifold is opened, and the gasoline vapor in the activated carbon canister is brought into the cylinder by clean air to participate in combustion under the vacuum degree of the intake pipe.

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