Looking for Vac line information - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-30-2006, 04:08 PM   #1
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Default Looking for Vac line information

The picture below is of my vacuum line going down to the transmission. I was wondering if anyone could tell me
1. What size is the line I need to pick up?

2. What is that round thing sitting between the two lines, and do I need to find a new one?

3. Anything I need to be scared of?


Thanks for the help as always

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Old 05-30-2006, 04:14 PM   #2
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The "round thing" is a check valve and needs to stay. Buy some new hose, cut the two pieces to the exact size and fit them onto the check valve, and your good to go!
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Old 05-30-2006, 04:23 PM   #3
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Check valve? Mine has nothing there but hose... Am I missing something?
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Old 05-30-2006, 04:59 PM   #4
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I don't think so. I was talking to Echo earlier, and he didn't have the check valve in his either
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Old 05-30-2006, 05:00 PM   #5
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I have one, but I don't think it'* a check valve. I just went out and blew into mine and it'* not one. I'm not sure what it is.
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