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-   -   99 Miata vacuum lines (https://www.miataturbo.net/general-miata-chat-9/99-miata-vacuum-lines-91254/)

Fifty_81 11-17-2016 08:49 PM

99 Miata vacuum lines
 
Can anyone help me identify what these lines connect too? Second photo is a close up of the line on the left in pic 1.

https://cimg5.ibsrv.net/gimg/www.mia...eba2fe0094.jpg
https://cimg8.ibsrv.net/gimg/www.mia...2c70d8d3ff.jpg

BarbyCar 11-18-2016 08:07 AM

There should be a vacuum hose routing sticker under the hood.

rigidbigelsworth 11-18-2016 09:29 AM

https://cimg9.ibsrv.net/gimg/www.mia...2a58e2411d.jpgone of the two parallel hoses goes here
https://cimg1.ibsrv.net/gimg/www.mia...befc7d4ee4.jpgthe one going to the sensor at a 90° angle goes here
They are both going to the intake manifold though so it probably doesn't matter which one goes where

Fifty_81 11-18-2016 12:11 PM


Originally Posted by rigidbigelsworth (Post 1375620)
one of the two parallel hoses goes here
the one going to the sensor at a 90° angle goes here
They are both going to the intake manifold though so it probably doesn't matter which one goes where

You are the king of the entire world. Thank you!!!!!!

codrus 11-18-2016 01:33 PM


Originally Posted by rigidbigelsworth (Post 1375620)
They are both going to the intake manifold though so it probably doesn't matter which one goes where

Be careful with this -- there are a couple ports on the VICS manifold that are special. There's a vacuum reservoir for the VICS solenoid that's built-in to the manifold, it's basically just a second cavity that's not attached to the plenum with 2 vacuum ports on it. One of them is fed by the line that runs under the fuel injectors (with the one-way valve in it), the other connects directly to the VICS solenoid. If you hook it up wrong then the VICS butterflies won't operate properly at WOT because there won't be any vacuum in there.

I don't remember which port the solenoid is supposed to use.

--Ian
​​​​​​​

rigidbigelsworth 11-18-2016 02:21 PM

Good point Codrus, I hadn't thought about the impact of the VICS

just ignore my comment about it not mattering where each one goes. Copy my comments under each pic about which one is which and you should be fine.


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