purge signal constant when cto is open?
just trying to understand how the evap canistor can be effective if it only purges when the cto valve/switch opens?. so i shut the engine off on a hot evening and the fuel tank is creating alot of fumes/pressure which the charcoal canistor captures? then when i start in the morning it purges after the cto reaches temp and opens? and after that it is constantly purging?. the vac line running to it is rubber fuel line and when it gets hot it is collapsing from the suction, is this normal?. can someone explain the system? what prevents vacume from being applied to the fuel tank during operation?