Vacuum Line

General discussion forum for J30 and M30 owners!
BD240sx
Posts: 14
Joined: Mon Aug 27, 2007 2:25 pm
Car: 1995 Infiniti J30T

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I got a question about a vacuum line that runs on the passenger side right by the block. There are actually 2 of them, 1 runs underneath the throttle body, and the other I am not sure. Well this other one is broken basically and I don't know where it is supposed to hook up. I have a 95 j30t.


GerryO
Posts: 974
Joined: Fri Feb 09, 2007 11:47 am
Car: 1993 J30t
Pearl White
Black Interior

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I recall several vacuum lines on the passenger side. One starts at the EGR valve that's located rear center of the engine and connects at the rear corner of the engine to a short metal tubing run that's mounted to the underside of the plenum.



Another vacuum line connects the other end of the metal tubing to the EGR control valve on the passenger side of the engine. Then there's a short elbow shaped piece of vacuum line on the EGR control valve and another vacuum line run that connects to a short piece of metal tubing that comes out of the underside of the throttle body on the front right of the engine?

Similar to, but not exactly like this:


Modified by GerryO at 6:01 PM 7/29/2008

BD240sx
Posts: 14
Joined: Mon Aug 27, 2007 2:25 pm
Car: 1995 Infiniti J30T

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Yeah, they run along side each other. They are in a little bracket that is about in the middle right next to block. Well not a bracket, but something to holdthe hoses. One goes underneath throttlebody, and other is what i'm talking about, it looks like it goes back and perhaps underneath block?

Gerardjg
Posts: 544
Joined: Tue Jan 24, 2006 2:09 pm
Car: 2007 Cobalt LS
2011 Hyundai Accent
2016 Kia Optima
Location: Central Florida

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khooper
Posts: 21
Joined: Thu Jun 05, 2008 7:24 pm

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check the vacuum reservoir (looks like a black plastic ball) it stores vacuum for functions such as your heater direction controls in the car etc...

i have found this link that might help youhttp://forums.altimas.org/zerothread/180816

good luck!

BD240sx
Posts: 14
Joined: Mon Aug 27, 2007 2:25 pm
Car: 1995 Infiniti J30T

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I just looked at that picture of the illustration, and I guess it wasnt throttle body that the hose ran under it was on the left side where it connects to intake manifold. The other was right under. I noticed that I have a hole underneathe the tube connecting to the manifold that looks like it should have a hose. I think it is #8 on the picture.

GerryO
Posts: 974
Joined: Fri Feb 09, 2007 11:47 am
Car: 1993 J30t
Pearl White
Black Interior

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Hose #8 connects to an opening or short piece of metal tubing on underside of the plastic ducting assembly that connects the MAF/Air Filter assembly to the passenger and driver side Throttle Bodies. It is shielded/covered, looking slightly larger diameter than the others (view A). If an end of the hose is broken off , you may have lost some hose and the piece of metal tubing that connects it to the hole in the underside of the plastic/rubber ducting. Here's a photo of Hose #8



Hose #7 connects the EGR control valve to the metal tubing on the underside of the passenger side Throttle Body

Hose #6 is that short elbow-like piece of tubing connecting the EGR control valve to the metal tubing on the underside of the plenum

Hoses #6 (top left), #7 (top right) and #8 (bottom center) are visible in the photo below.



Hose #5 gets things closer to the EGR valve and Hose #4 gets things all the way to the EGR valve, and should have a bit of rubber tubing shielding it. Hose #5 is shielded too and is really buried under the passenger side corner of the plenum.
Modified by GerryO at 8:42 AM 7/30/2008

BD240sx
Posts: 14
Joined: Mon Aug 27, 2007 2:25 pm
Car: 1995 Infiniti J30T

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Looks to be number 8, and it looks like that metal piece is gone. Thanks for all the help guys.


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