Wellll finally god fed up .. pulled the hood off and started looking around the back and pinpointed my vacuum leak ... so now how do I go about fixing it and what do I need to take off to do it? It's not a hose but this thing (i think it has something to do with power steering?)

If you are looking at the car from the front ... then the leak is coming from the right side ... on the bottom.

 

noone ?

 

how could power steering cause a vaccum leak????

 

the part is mounted to the manifold .. i think the seal is fuxored

 

get a new one

 

but do i have to take the manifold off to get to it ? i cant figure out any other way (its in an odd position and i cant get my hands down there

 

that's probably one of those bullshit things that comes on a stock car that everybody gets rid of. I can't figure out what it is though because the pic is too zoomed in.

 

why does it seem that the rx7 is the only car that has vacuum leaks? lol i have never seen a car with such a common problem.

 

It's the Air Supply Valve, it's main purpose is to compensate during steering or other loads to maintain a stable idle.

I've circled it on a pic of my UIM:



Your best best would be to remove the UIM and take it off, scrape off the old gasket and put it on with a new gasket or rtv sealant. Once your under there you can do a bunch of other maintenance as well if you wanted to.

 

These cars are 20 yrs old and have very hot engines, that combo leads to brittle vacuum hoses. simple.

 

It's the air supply valve/solenoid, for additional air when the pwr steering is turned.

It's held with just two 10mm nuts. How long could it possibly take to remove it? Three minutes? Two and a half? Less time than it took to write this.

 

Listen to hailers.

 

took two minutes lol
i was an idiot and forgot i had short handled wrenches .. yay. now i need to get the gasket

 

just block the ****** off. It doesnt do ANYTHING useful. jspec cars did not have the valve, yet they manage to stay running while the steering wheels are turned.

 

You can buy gasket paper at the auto store. A buck maybe. Then cut out a gasket using a utility knife or exacto knife.

Wanna block it off. Cut out a piece from the gasket paper to match the shape of the air supply valve and install it with no holes in the gasket. Simple blockoff. You can do the same with the EGR. Just install a gasket with no holes in it. Blocked off.

Don't like that? Get some five minute epoxy and knead it in the holes on the manifold and let it set up for a hour or so. Works fine. Put the solenoid on the shelf for later possible use.

Lack of the solenoid allows one to get his hand behind the throttle body and remove/reinstall the vacuum hoses easier.

The air supply valve works. You turn the steering. The ECU gets a signal you turned the steering wheel. The ECU puts a gnd on the solenoid and the solenoid opens and in turn ups the engine rpms. There should always be 12vdc on one wire of the solenoid if the key is to ON or better. Usually a black/white wire. The other wire is the gnd signal.