Vac guage install

[PAFJ]

Where's the best place to hook up the vac line for the guage. Somewhere on the carb?

TIA-

 

[cruiser_guy]

Tee into the booster, just make sure your connections are tight!

 

[Civil1]

I've got mine coming off the booster also.

 

[PAFJ]

Okay, so I wen't to hook up to the booster and I don't see any vacuum lines coming off it, I see a nipple where a vac line should go, but from the booster where is the line supposed to connect.

Looking at the booster, the upper right hand side is where the nipple is, is this correct. I'll try to search and see what I come up with, but any help is appreciated.

TIA-

 

[Civil1]

Near the rear of the intake manifold is where the booster vacuum hose should go.

 

[PAFJ]

Thanks civil, you don't happen to have a pic or know of a good pic to show the location do you?

TIA-

 

[PAFJ]

In the one pic of the booster there is little nipple next to the larger line, should I have a hose connected here, or are you guys talking about tapping into the larger line. If tap into the larger line, how did you do it?

TIA-

 

[PAFJ]

Oops, posted two of the same pic, here is the other pic I meant to post, this one show where the line goes to the back of the intake manifold, is this what your talking about?

 

[chitown40]

Yes. 'T' into that connection and you'll get the most accurate reading.

 

[Civil1]

Looks like you already got it

 

[PAFJ]

Yes. 'T' into that connection and you'll get the most accurate reading.

The small hose or the larger hose.

 

[kevinmrowland]

The small hose is fine, and easier to get fittings for.
The other "nipple" on the booster is not a nipple. No hose is supposed to go there.

 

[PAFJ]

Alright, I tee'd into the small hose in the pic, and all systems go!! I have a nice steady reading of 19 at idle. While driving the needle moves quite a bit, I need to figure out what all this means. Thanks again.

 

[kevinmrowland]

Cool, I remember a very nice write up in the tech section about what vacuum readings indicate, very informative, you should look it up.

 

[PAFJ]

Thanks Kevin Yeah, I checked it out. I think all the numbers on the write up represent what is going on at idle. So at a steady 19, I'm good to go at idle. I'm just curious as to while driving, what the numbers represent, or if it even matters.

 

[kevinmrowland]

Hummmmm....
I could of sworn it explained some of the other power band vacuum readings............. I know I read it somewhere, I'll have to go check it out.

 

[Live to Ski]

There was an article in the jan/feb 2000 Toyota Trails that expands (no pun intended) on what various vacuum readings indicate. If you don't have the magazine, drop me an email address and I send over a pdf scan of the article.

 

[cruiser_guy]

The higher the vacuum the better the gas mileage. They used to have those as some kind of fuel economy gage.

 

[Civil1]

Here's the link I've been looking for. Hope it helps in reading a vacuum gauge.

http://www.users.bigpond.com/ergoff/vac1.htm

 

[loeky]

might want to check the tech links here on MUD too:

http://www.ih8mud.com/tech/vacuum.php