XJ40 ( XJ81 ) 1986 - 1994

Removing Fuel Injector from Rail

 
  #1  
Old 10-23-2018, 03:20 PM
Jagbro's Avatar
Member
Thread Starter
Join Date: Jan 2017
Location: Los Angeles
Posts: 93
Received 10 Likes on 7 Posts
Default Removing Fuel Injector from Rail

1991 XJ40 4.0....

Replacing an injector. Is there any special knack needed removing the injector from the special tools, sensitive areas, etc)?
 
  #2  
Old 10-23-2018, 06:10 PM
Veteran Member
Join Date: Sep 2012
Location: Victoria BC Canada
Posts: 1,909
Received 1,238 Likes on 773 Posts
Default

If memory serves, you just remove the clip and they release?

(Wait for confirmation on this though!)

Larry
 
  #3  
Old 10-23-2018, 08:33 PM
jerry_hoback's Avatar
Veteran Member
Join Date: May 2007
Location: Michigan City, Indiana
Posts: 1,846
Received 386 Likes on 317 Posts
Default

Yes that tin clip has to come off. Mine were quite stiff and I had to pull hard, but it's just an o ring in there. ( I ended up using a flathead valve spring compressor to pull a couple out of the head)
 
  #4  
Old 10-25-2018, 11:34 AM
Senior Member
Join Date: Aug 2011
Location: Boise, ID
Posts: 150
Received 27 Likes on 22 Posts
Default

I just did this on mine a month or so ago. Unhook your battery cable (don't need any sparks with your fuel system open) and relieve the pressure from the lines. Unhook the rail on each end and unplug the pigtails from each injector. If I remember right there are four bolts holding the rail to the intake manifold. Once you remove those, you should be able to pull the rail and injectors out of the intake. The injector retainer clips come off easily, I used a screwdriver. After that, the injectors take a bit of force to remove (grab and twist while pulling away from the rail), but they aren't bad. Just make sure you replace your o-rings... I had a fire in my BMW e30 because i pinched the fuel pressure regulator o-ring when I installed it.

One thing to keep in mind, the plastic plugs for the injectors can get brittle and break really easily. You can buy new ones but you'll have to splice them in to the harness.
 
  #5  
Old 10-25-2018, 05:19 PM
Jagbro's Avatar
Member
Thread Starter
Join Date: Jan 2017
Location: Los Angeles
Posts: 93
Received 10 Likes on 7 Posts
Default

Ok that worked... Injectors installed in rail quite easily...

However, the rail is not aligning with the fuel regulator. The rail I have is from a 93-94 XJ40, mine is a 1991. The salvage yard that sent it to me swears that the rails are the same from 1990-94.

I called the largest Jag dealer in Southern California... this guy who's worked on both models assured me that the rail for the 90-92's are indeed different from the 93-94's. I'm totally confused and frustrated.

All I know is the this 93-94 rail is not aligning properly. Is there anyone out there that actually knows about this?
 
  #6  
Old 10-25-2018, 05:49 PM
Senior Member
Join Date: Aug 2011
Location: Boise, ID
Posts: 150
Received 27 Likes on 22 Posts
Default

I can't be sure, but according to SNG Barratt's website, the 3.2, 3.6, and 4.0 all use the same rail, and the 2.9 uses a different rail. Maybe they sent you the 2.9l rail by mistake? The link below is a breakdown of the 2.9l system, is that what the rail you just put on looks like?

https://www.sngbarratt.com/us/#!/Eng...IL-2.9%20LITRE

Checking JagBits, they list a fuel rail for a 1993-1994 XJ6, so it seems like they list it as being different...
 
  #7  
Old 11-15-2018, 05:30 PM
Senior Member
Join Date: Jun 2008
Location: UK
Posts: 132
Received 43 Likes on 25 Posts
Default

There are AFAIK two versions of the fuel rail used on the six cylinder engine - EAC9690 for the 3.6 litre cars and EBC3679 for the 3.2 and 4.0 litres. They are slightly different but are interchangeable - and Jaguar list the later one as a supersession part for the earlier type. A 1993/94 should fit your 1991.
My own car is a 1993MY and I have fitted a 1987MY fuel rail to it.

Is the new fuel rail slightly bent perhaps?

Edited to add link:

https://www.jaguarclassicparts.com/u...-3-2-4-0-litre

https://www.jaguarclassicparts.com/u...tors-4-0-litre
 

Last edited by db in uk; 11-15-2018 at 05:33 PM.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
adikesdw
XK8 / XKR ( X100 )
3
11-07-2017 09:16 AM
sogood
XJ XJ6 / XJR6 ( X300 )
4
11-26-2016 08:55 AM
brgjag
XK8 / XKR ( X100 )
2
11-21-2014 04:32 PM
zibby_uk
X-Type ( X400 )
2
06-09-2012 04:12 PM
loaks111
X-Type ( X400 )
3
07-10-2008 10:18 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Removing Fuel Injector from Rail


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: