Subject	The diaphragm needs to isolate both sides and hold pressure/
Posted by	itsa300zx on January 09, 2025 at 10:17 AM
	This message has been viewed 14 times.
In Reply To	Should the diaphragm still hold pressure or vacuum above it? posted by ZXoltan on January 09, 2025 at 08:02 AM
Message	vacuum. I think the weep hole allows free movement of the diaphragm during pressure changes and vent out possible moisture. FWIW Z-line, mine leaked a little at the weep hole during bench testing 10+ years ago and seems to work fine. My diaphragm tested good through the small vacuum port.
Follow Ups	Are the OE recirs supposed to leak air on a leak test.. - Z-line 15:25:57 01/07/25 Don't think so, at least not enough to really hear it - Polishzx 18:25:17 01/07/25 I can definitely hear it if I lean in, the cloud of smoke.. - Z-line 21:17:30 01/07/25 Nope. Do you have other recircs you can test? (n/m) - vorpalZed 09:13:20 01/08/25 Fortunately, I do. I’ll be swapping them this week.. - Z-line 12:17:37 01/08/25 Leaking recirculation valves will result in a boost leak. - cherry 11:32:01 01/08/25 Dumb follow-up questions ;-) - ZXoltan 11:57:30 01/08/25 Mine was leaking from the weep hole, which I think - cherry 13:48:02 01/08/25 Thanks. Makes sense. - ZXoltan 14:01:27 01/08/25 The weep hole under the diaphragm can leak a tiny bit - LitlElvis 20:40:08 01/08/25 Should the diaphragm still hold pressure or vacuum above it? - ZXoltan 08:02:32 01/09/25 The diaphragm needs to isolate both sides and hold pressure/ - itsa300zx 10:17:13 01/09/25 Yes, the diaphragm should hold vacuum when applied at the - LitlElvis 11:21:07 01/09/25
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