Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
Old Sep 21, 2015, 03:49 PM
How-Tos on this Topic
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: General Overview
Print Wikipost

XJ Ask the Question Thread

Thread Tools
 
Search this Thread
 
Old Sep 18, 2014 | 06:28 PM
  #45496  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Cherokeekid4x4
Okay why are some 4.0s supposed to be at 49 psi +\- 5 psi? Mines a 94 if this makes a difference.
Because they're the later system with no return line.......
Old Sep 18, 2014 | 06:32 PM
  #45497  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
Because they're the later system with no return line.......
Didn't know..... But alright. What's it mean if the pressure builds up after shutoff. And about 10 minutes.
Old Sep 18, 2014 | 06:33 PM
  #45498  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Cherokeekid4x4
Didn't know..... But alright. What's it mean if the pressure builders up after shutoff. And about 10 minutes.
That the fuel in the line is heating up and expanding, but not leaking anywhere.

Go the full 30 minutes.
Old Sep 18, 2014 | 06:35 PM
  #45499  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
That the fuel in the line is heating up and expanding, but not leaking anywhere. Go the full 30 minutes.
It's still plugged in so I will. So it's fine that it was at 34? Why'd it drop when I hit the gas?
Old Sep 18, 2014 | 06:37 PM
  #45500  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Cherokeekid4x4
It's still plugged in so I will. So it's fine that it was at 34? Why'd it drop when I hit the gas?
Because the pressure dropped momentarily as the injectors opened to supply more gas as was requested?
Old Sep 18, 2014 | 06:39 PM
  #45501  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
Because the pressure dropped momentarily as the injectors opened to supply more gas as was requested?
Alright.. So I'm guessing I'm good on the fuel system side.
Old Sep 18, 2014 | 06:41 PM
  #45502  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Cherokeekid4x4
Alright.. So I'm guessing I'm good on the fuel system side.
30 minutes gone by?
Old Sep 18, 2014 | 06:50 PM
  #45503  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
30 minutes gone by?
Indeed, sitting at 27 psi.
Old Sep 18, 2014 | 07:06 PM
  #45504  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

So now what?
Old Sep 18, 2014 | 07:07 PM
  #45505  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
So now what?
All good?
Old Sep 18, 2014 | 07:09 PM
  #45506  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Cherokeekid4x4
All good?
Are you Jewish? Answer a question with a question?
Old Sep 18, 2014 | 07:10 PM
  #45507  
FruitSnacks's Avatar
Senior Member
 
Joined: Feb 2014
Posts: 854
Likes: 1
From: Minnesota
Year: 1996
Model: Cherokee
Engine: 4.0
Default

Originally Posted by cruiser54
Are you Jewish? Answer a question with a question?
Lmao
Old Sep 18, 2014 | 07:10 PM
  #45508  
Dumajones's Avatar
Moderator CF K9-unit
 
Joined: Apr 2012
Posts: 5,842
Likes: 12
From: Alaska
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
Default

Originally Posted by cruiser54
Are you Jewish? Answer a question with a question?
Old Sep 18, 2014 | 07:11 PM
  #45509  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Dumajones
He could get a new avatar, ya know.
Old Sep 18, 2014 | 07:12 PM
  #45510  
Cherokeekid4x4's Avatar
CF Veteran
 
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Default

Originally Posted by cruiser54
Are you Jewish? Answer a question with a question?
Just wanna know if everything is good and doing what it's supposed to do. Would really like to move onto my next attempt at figuring out my issue. So a straight "yes, it's all good" or "no, there is an issue" would do just fine.



All times are GMT -5. The time now is 07:48 PM.