Subject	Yes, the diaphragm should hold vacuum when applied at the
Posted by	LitlElvis on January 09, 2025 at 11:21 AM
	This message has been viewed 18 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	nipple. This should be the case in stock form as well as with the GHK installed. The weep hole allows atmospheric pressure to enter under the diaphragm and push against it to open the valve when vacuum is applied above the diaphragm.
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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