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Old 08-30-2020, 10:09 AM   #1
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Are you sucking air through the overflow hose by chance?
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Old 08-30-2020, 01:04 PM   #2
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Are you sucking air through the overflow hose by chance?

Talk to me...I hope I’m not forgetting something. I remember just stuffing the airlift in the filler neck and drawing a vacuum, did I plug something and forget?


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Old 08-30-2020, 01:12 PM   #3
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Talk to me...I hope I’m not forgetting something. I remember just stuffing the airlift in the filler neck and drawing a vacuum, did I plug something and forget?


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No; the Airlift system is just plugged into the tank fill opening and will pull vacuum if the system is closed; if you are not getting vacuum, something is open.

Any chance you are using an aftermarket tank with a built in leak?
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Old 08-30-2020, 07:43 PM   #4
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Just had same issue. New tank would make vacuum with airlift. Did pressure test. The bleed valve on the new tank was defective and leaking. replaced the valve and then system held pressure/ vacuum.
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Old 08-30-2020, 08:48 PM   #5
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Just read through and thought of an old thread. Here it is just in case it becomes relevant. My first Question, Bleeder Valve?
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Old 08-31-2020, 04:59 AM   #6
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Originally Posted by JFP in PA View Post
No; the Airlift system is just plugged into the tank fill opening and will pull vacuum if the system is closed; if you are not getting vacuum, something is open.

Any chance you are using an aftermarket tank with a built in leak?
gonna check the bleeder valve, it is an aftermarket provided by owner. hoping I dont need parts
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