Vacume leak detection (how can I do it) -

LinkBack Thread Tools
post #1 of 4 Old 03-07-2008, 11:56 AM Thread Starter
Registered User
1999 WJ 
Join Date: Sep 2004
Location: Des Moines , Iowa
Posts: 53
Vacume leak detection (how can I do it)

I was wondering if there is a good way to track down a vacume leak. I've heard that you can use starter fluid to spray lightly around the hoses and if the idle goes up there may be a vacume leak. Does anyone have any other sugestions about how to do this . I am having a little problem with a slightly higher idle than what I think is normal. It is running around 12-1500 even after it warms up . I have swaped the IAC with a Junk yard one and that the next day later made it worse then I swapped it back and it brought it back down to 12-1500 . I havent tried the TB cleaner yet but may do that soon .

Addicted to Jeeps , had 1994 YJ, &1994 XJ, Have now 1997 XJ, 1996 XJ, &my project 1989 MJ, just bought another 89 MJ with a 4 cyl.
wranglercory is offline  
Sponsored Links
post #2 of 4 Old 03-07-2008, 03:25 PM
Registered User
1989 MJ Comanche 
Join Date: Nov 2007
Location: Rhode Island
Posts: 277
You can buy new lines from napa. There are two main pieces for $20 each. And then the small fitting and line that comes off the back of the valve cover is about $10. These are the part #s
maddzz is offline  
post #3 of 4 Old 03-13-2008, 11:34 PM
Registered User
1984 J-Series Truck 
Join Date: Nov 2004
Posts: 3,210
too much ether can melt the pistons!
carnuck is offline  
post #4 of 4 Old 03-19-2008, 03:19 PM
Registered User
2000 WJ 
Join Date: Feb 2006
Location: Marietta,Ga
Posts: 112
First turn ur jeep on then take a propane tourch and turn the gas on, dont light it. Just pass the tourch over all of the vacum lines. When you hear the engine rev that is where your leak will be.
Hope this helps

2000 WJ stock

1992 Jeep Cherokee, 4.5in Rough Country lift, Bushwacker Fender Flares, Homemade Bumpers Front and Rear, 33x12.50 TSL's, Flowmaster 40 Series Muffler.
rnuover is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
P1494 - Leak Detection Pump Location xjRalfy XJ Cherokee Technical Forum 8 08-19-2016 11:06 PM
exhaust leak detection? beater_xj XJ Cherokee Technical Forum 1 08-03-2008 01:45 PM
Vaccuum Leak Detection? Idle Issue? 4.0H.O.XJ XJ Cherokee Technical Forum 1 05-16-2007 08:04 PM
Leak Detection Pump and other things BDJCL3 XJ Cherokee Technical Forum 1 10-05-2006 09:58 AM
Leak detection pump - is it supposed to tick? jgenova02 XJ Cherokee Technical Forum 1 03-13-2005 12:08 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome