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Thread: Vacuum Guage Input

  1. #1

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    I.D.K.?

    Vacuum Guage Input

    Hello

    I am planning to install a vacuum guage on a 1987 dodge ram 50 (2.6L) with automatic transmission and CA emissions. I am wondering where to connect the vacuum guage input. I was thinking of connecting it to one of two places.

    1. The easiest location would be a T connector to the distributor (vacuum advance?). From what I can tell, this is the vacuum switch which connects to the top of the disributor. One hose has a vacuum and the other one does not.

    2. On the side of the engine, beneath the carb and a cluster of hoses is a 5 connector "Tree". In the engine diagrams in the maintenance book it refers to this tree as a vacuum and shows just three connectors. In my engine it has 5 connectors. I think all of the hoses connected here will be of equal pressure.

    Any advice is appreciated.

    John

  2. #2



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    You want manifold vacuum. Any place directly into the intake or after the carb.
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  3. #3

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    Hello Camoit,

    I believe "any place directly into the intake" will be the tree vaguely shown in the photo. Likewise I think "after the carb" is one of the hoses labeled A, B, or C in the photo. If you get a chance please take a look at the photo and let me know your expert advice.

    John
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  4. #4



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    in this picture you will see the tree. It's any port that is exposed to the manifold vacuum. You can t into any line that is exposed.

    http://www.mightyram50.net/camoit/smog/85-96-smog1.jpg
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  5. #5

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    Hello Camoit,

    I believe the T you mention is the one in the center of your picture and the one pointed to by the arrow in mine. I did attach there and I got it working. If anyone is interested I have a video of the Vacuum gauge I built.

    Keep in mind this truck is a work in progress as is the gauge.

    The videos are here: http://netskink.blogspot.com

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