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914World.com _ 914World Garage _ Calling those under privileged 1.7 owners

Posted by: tdgray Apr 10 2006, 11:45 AM

Ok so I was trying to install my vacuum hose kit yesterday. Most of the hoses were missing when I bought the car. Of those that were attached I have replaced them in the correct locations.

Here's where I need help. There are three outlets on the throttle body. One is for the MPS the other two go.... where?

Also where does the decel valve get mounted.

It would be a great help if someone could take a good quality pic that we could label and throw into the classics.

OH and all you smartasses that will throw up the link to PP vacuum hose diagram... DON'T. It is about as helpful as the Haynes manual.

Thanks in advance as usual guys

Posted by: hmeeder Apr 10 2006, 11:56 AM

Throttle Body?

The MPS goes off a nipple on the air distributor, no?

The two on the throttle body itself, larger one to the vacuum advance on the diz and the smaller one to the retard side of the diz.

Posted by: mike_the_man Apr 10 2006, 11:57 AM

One of the vacuum ports of the TB goes to the dizzy vaccum canister. Of hand, I'm not sure where the other one goes. I believe the decel valve gets mounted on the passager side of the engine bay, somewhere around the MPS, although you really don't need the decel valve. I pulled it in mine.

I have a pic at home thats helpful. If someone hasn't posted it by then, I'll get it up.

Posted by: tdgray Apr 10 2006, 12:23 PM

Sorry guys... my typing got ahead of my brain.

OK not the throttle body. The air dist.

If you are looking from the back of the car it is to the right of the TB. It has three outlets. One smaller than the others (I believe this is where the MPS goes).

Thanks for the help.

And YES a pic would be greatly appreciated.

Posted by: drewvw Apr 10 2006, 12:35 PM

I just redid most of my vacuum hoses this weekend, I found this to be really helpful:

http://www.pelicanparts.com/914/technical_specs/914_17FI_diag.htm

Posted by: r_towle Apr 10 2006, 12:53 PM

Approach the car from the passenger side.

Look into the engine bay.

Back left of the Plenum is the port for the MPS.
Decel Valve goes into a fitting that is connected to the AAR valve, on the right drivers side of the plenum.

the two vacuum ports on the throttle body go to the dizzy.

Rich

Posted by: Cap'n Krusty Apr 10 2006, 01:10 PM

Three ports on the TB? Never seen one of those on a teener. There's an advance port, and a retard port. The plenum has multiple ports, and varies by year. The port on the left side near the cold start valve is for the AAR, and on later 1.7s the hose there has a tap for the small line to the decel valve. The right side has one port for the MPS, and it's 8mm. Later cars have a second port there for the decel valve, and it's 10mm. The Cap'n

Posted by: drewvw Apr 10 2006, 01:12 PM

pics would help...this is real fresh in my mind so its one of the few things I can actually help with on a 914

Posted by: tdgray Apr 10 2006, 01:35 PM

I'll take pics tonight if I can.

Thanks for all your help guys. I know I am calling things wrong names etc. This is kinda greek to me still.

Posted by: drewvw Apr 10 2006, 01:53 PM

and while your at it, lets see some pics of that MGA! I love those cars....

Posted by: Bleyseng Apr 13 2006, 08:19 AM

Here's a 1.7l engine bay. IPB Image

Posted by: mike_the_man Apr 13 2006, 08:30 AM

Now that we're up and running, I should be able to get a good pic up tonight. It's on my computer at home.

It's good to be back here!

Posted by: mike_the_man Apr 14 2006, 01:04 PM

Here is a good pic, although it's of a 2.0L, it should still be helpful.

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