Vacuum lines -
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Unread 09-26-2015, 12:33 PM   #1
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Pierre_r's Avatar
1989 XJ Cherokee 
Join Date: Jul 2009
Location: Sweden
Posts: 756
Vacuum lines

I replaced my sparkplugs and coil to eliminate them as a cause for my idle problems. (it did not help at all..)
Once it got warm enough to idle by itself i looked under the hood and on the right side on the intake manifold there are a few vacuum lines.
When i started to move them i could hear how the idle changed rpms.
Also heard that i need a new gasket for the EGR tube that sits on the manifold..

Now where can i by new ones? there is one with a one way valve on one of the lines.
The line with tape on it is for the pcv
Here is one of them:
It was this one that changed the idle

The other one:

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Unread 09-26-2015, 02:57 PM   #2
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1997 ZJ 
Join Date: Dec 2008
Location: , Alabama
Posts: 8,045
Those items can usually be found at the "Help" section of the parts store. Then NAPA has a rack with this kind of stuff. I would take some measurements on the ports to be sure of the ID.

I just realized you are in Sweden... buzzkill...

So get your measurements and go from there. If the check valve is still blocking in one direction, you can reuse it. It should hold vacuum in the line side of the circuit.
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Unread 09-27-2015, 09:44 AM   #3
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1995 ZJ 
Join Date: Feb 2005
Location: New Mexico
Posts: 6,385
You can use standard hose for the EGR line. The other 90 degree bend will take a little research, but should be available. I've had that bend stretch and leak. The electrical tape on the cracked hose is likely the problem.
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