vacuum line mystery.......
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Junior Member
Joined: Apr 2002
Posts: 34
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From: SE
vacuum line mystery.......
I just installed the stock air pump and ACV for my 89rx7 n/a. My car had neither when I bought it. Anyhow, I'm currently putting in the vacuum lines and there's one left I can't figure out. OK, if you are facing the ACV there are 4 vacuum nipples stemming from the Dynamic Chamber. They are located above the ACV. The one to the farthest right goes to the Pressure Sensor, then one left of that goes to the spider vacuum rack, and one left of that goes once again to the spider vacuum rack and last one farthest to the left is the one I can't figure out because it's NOT ON THE VACUMM HOSE ROUTING DIAGRAM. I have a LONG vacuum hose left over and think it goes to this vacuum nipple. AND THE MYSTERY CONTINUES...........
Thread Starter
Junior Member
Joined: Apr 2002
Posts: 34
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From: SE
OOPS. IT'S THE NEXT TO THE LAST ONE ON YOUR LEFT
My original post was incorrect. PLEASE READ:
OK, if you are facing the ACV there are 4 vacuum nipples stemming from the Dynamic Chamber. They are located above the ACV. The one to the farthest right goes to the Pressure Sensor, then one left of that goes to the spider vacuum rack and one left of that is the one I can't figure out because it's NOT ON THE VACUMM HOSE ROUTING DIAGRAM and then the one farthest to the left goes to the spider vacuum rack again. I have a LONG vacuum hose left over and think it goes to this vacuum nipple. AND THE MYSTERY CONTINUES...........
OK, if you are facing the ACV there are 4 vacuum nipples stemming from the Dynamic Chamber. They are located above the ACV. The one to the farthest right goes to the Pressure Sensor, then one left of that goes to the spider vacuum rack and one left of that is the one I can't figure out because it's NOT ON THE VACUMM HOSE ROUTING DIAGRAM and then the one farthest to the left goes to the spider vacuum rack again. I have a LONG vacuum hose left over and think it goes to this vacuum nipple. AND THE MYSTERY CONTINUES...........
Senior Member
Joined: Apr 2003
Posts: 523
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From: New Idaho
Brock.
I had a similiar vaccuum mystery on the other side of the engine. I have the acv and everything else on your side hooked up correctly.
If no one else helps you out here, when I get out of work I can go look at it for you.
I had a similiar vaccuum mystery on the other side of the engine. I have the acv and everything else on your side hooked up correctly.
If no one else helps you out here, when I get out of work I can go look at it for you.
Rotary Enthusiast
Joined: Mar 2001
Posts: 959
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From: Victoria, BC, Canada
One of the lines comming from the middle intake manifold (this is the one where the VDI valve is located) is not used (at least on my '91 N/A), it's capped off.
This is of course if you're not talking about the hoses on the dynamic chamber which is the casting which say's "13B Injection"
I have a picture of this that I will add as soon as I can.
This is of course if you're not talking about the hoses on the dynamic chamber which is the casting which say's "13B Injection"
I have a picture of this that I will add as soon as I can.
Last edited by asherwood; Oct 15, 2003 at 01:04 PM.
Rotary Enthusiast
Joined: Mar 2001
Posts: 959
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From: Victoria, BC, Canada
Here is the picture I promissed.
1) Vacuum spider
2) ACV
3) Pressure sensor on passenger fender (N350)
4) N.U. not used
the larger hose with the visible wire clamp goes to the Catalytic tube.
2) ACV
3) Pressure sensor on passenger fender (N350)
4) N.U. not used
the larger hose with the visible wire clamp goes to the Catalytic tube.
Last edited by asherwood; Oct 15, 2003 at 03:30 PM.
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