Цитата:
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Клапан не клинит и без 12В не продувается. Но и не продувается, как в книжке написано, с трудом без 12В. Значит бензобак не дышит, пока клапан закрыт. Может этот факт как то влияет на подачу топлива из бензобака?
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Может вы не корректно перевели тот мануал ?
Судя по вашему описанию у вас все работает -
Цитата:
With the engine OFF, disconnect the hoses from both valves and connect a clean length of hose. It should be possible to blow through the frequency valve (normally open) but not the solenoid valve (normally closed).
With the engine coolant less than 140°F (60°C), disconnect the purge hose from the canister to the frequency valve. With the engine at idle, there should be no vacuum.
As the engine warms to operating temperature, the solenoid valve should be ON and open. The frequency valve should begin to cycle ON and OFF , open and closed. There will be strong vacuum for about 30 seconds, then little or no vacuum for about 60 seconds.
If the system does not perform as described, pull back the connector boots so a voltmeter or test light can be connected with the wiring still connected to the valves. If there is no voltage, the wiring or the engine control unit may be faulty. If voltage appears at the intervals described, 1 or both of the valves is faulty. Using a suitable Digital Multi-Meter (DMM) check the resistance of the purge regulator valve as follows:
Disconnect the EVAP canister purge regulator valve harness electrical connector.
Measure the resistance at the electrical terminals of the EVAP canister purge regulator valve. The resistance should be 20-28 ohms.
If out of specification, replace the EVAP canister purge regulator valve.
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Т.е пока не подано 12 вольт на х.ходу - на выходе из клапана не должно быть вакуума .
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Но если подать давление в клапан ( компрессором ) , то он откроется .
Так обычно проверяют исправность пружины в клапане.