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E36/7 Z3 (1996-2002)
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Old 04-21-2019, 12:00 PM
WANGDM WANGDM is offline
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Location: Phoenix AZ
Join Date: Jan 2015
Posts: 7
Mein Auto: 2002 Z3 3.0
A/C Service

Tried several times to add R134A to my 2002 Z3 3.0. I have gauge sets, hoses and quick connect couplers for R134A that have worked fine on a variety of other cars (most recently a Toyota and a Nissan). When I try to fit the couplers on the BMW service ports they will not "snap" on. In fact they will not slip on at all. And, no I'm not trying to fit high side to low or vice versa. I've even google searched for BMC specific couplers with no success.

I may well be eligible for official Moron-Of-The-Week award, but what am I doing wrong?

Last edited by WANGDM; 04-21-2019 at 04:04 PM.
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Old 04-21-2019, 04:16 PM
nfunk nfunk is offline
1998 BMW Z3 2.8L
Location: New Orleans
Join Date: Oct 2011
Posts: 378
Mein Auto: 1998 BMW Z3 2.8L
I found that it took a little might to snap the couplers on. I found putting a little PAG AC oil on the coupler first helped tremendously.
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