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Unread 05-30-2008, 11:06 PM   #1
myriad360
Registered User
2001 XJ Cherokee 
 
Join Date: Oct 2006
Location: Moscow, ID
Posts: 549
Emissions and Vacuum Line


Ahhh.... I am still punishing myself on my '88 Cherokee. It is running now, but MPG is a dismal 6 MPG. I know there is a cracked header that I need replaced, but I also was inspecting the vacuum line going from the MAP to the Intake Manifold, and right where the elbow meets the bigger plug at the Intake Manifold, it cracked and broke off as I touched it. I tried fixing it, but I am going to have to redo it as I think it is still leaking a little. As the piece kind of fell apart, I ended up replacing a lot of it with soft vacuum line, unlike the OEM hard vacuum line. I am wondering if the hard vs soft type vacuum lines makes a difference, and if I have to remake more of the piece, if I should just get a replacement from the dealership ($), or if I should fab something myself, and if so, if I should take mind of all the internal diameters of the vacuum lines. Or whatever I should know about remaking vacuum lines

Thanks emission experts and physics majors!

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Unread 05-31-2008, 02:04 PM   #2
myriad360
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2001 XJ Cherokee 
 
Join Date: Oct 2006
Location: Moscow, ID
Posts: 549
Anyone have any ideas?
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Unread 06-04-2008, 01:35 AM   #3
carnuck
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1984 J-Series Truck 
 
Join Date: Nov 2004
Posts: 3,212
Sorry. Haven't been on here awhile. Hard plastic line is easy to find at most auto parts stores. Run a very good can of injection cleaner (I use BG's 44K)
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