Make sure all the tanks are seated properly and all clamps are securely clamped. I found that if it's not all sealed tight it won't suck. Also make sure the red filter is clear debris. You can hear the difference when it's all tightly sealed. Hope this works for you.
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Make sure all the tanks are seated properly and all clamps are securely clamped. I found that if it's not all sealed tight it won't suck. Also make sure the red filter is clear debris. You can hear the difference when it's all tightly sealed. Hope this works for you.