XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Rochester valve and fuel smell

Thread Tools
 
Search this Thread
 
Old Feb 22, 2022 | 01:51 PM
  #21  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

Originally Posted by alpecsa
Have a look:
https://youtu.be/BSWUZa4CbGA
Alfredo

thanks for that
 
Reply
Old Feb 23, 2022 | 03:25 AM
  #22  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

Greg, I've blown the brether line through this morning that's clear. Managed to test the rv and that seems ok. Smell of fuel has greatly dissipated but still a faint wiff. Not sure if that's just legacy odour and will go fingers crossed. Just to be 100% sure, should the pipe that goes from the rv to the underside of the car, be connected to the outlet on the same side as the vac pipe. Previously when wriggling about under the car I noticed a wiff of fuel in that corner where the breather comes out and thinking about it , I haven't noticed it since I've had the problem in the boot. Hopefully it was that blockage.
 
Reply
Old Feb 23, 2022 | 04:20 AM
  #23  
Greg in France's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2012
Posts: 14,600
Likes: 10,795
From: France
Default

Originally Posted by brinny
Greg, I've blown the brether line through this morning that's clear. Managed to test the rv and that seems ok. Smell of fuel has greatly dissipated but still a faint wiff. Not sure if that's just legacy odour and will go fingers crossed. Just to be 100% sure, should the pipe that goes from the rv to the underside of the car, be connected to the outlet on the same side as the vac pipe. Previously when wriggling about under the car I noticed a wiff of fuel in that corner where the breather comes out and thinking about it , I haven't noticed it since I've had the problem in the boot. Hopefully it was that blockage.
Briiny
The single spigot goes to the outlet. The side with two spigots is for the inlet from the tank/canister and the vac pipe (the smaller top pipe).
 
Reply
Old Feb 23, 2022 | 04:59 AM
  #24  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

Thanks lol
 
Reply
Old Feb 25, 2022 | 05:28 AM
  #25  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

I have just done a double check on the rochester valve. I used a large syringe to apply vac. With this on I could suck and blow . I had to hold the syringe open as it was trying to suck it back in. It seemed it had quite a pull on the syringe to say it works at 2 psi. Do you think all this sounds like it's working OK? Thanks
 
Reply
Old Feb 25, 2022 | 07:02 AM
  #26  
Greg in France's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2012
Posts: 14,600
Likes: 10,795
From: France
Default

Yes that is to spec, BUT the tank should be able to breath OUTWARDS engine off (ie no vac). If you cannot blow outwards with no vac the valve is faulty.
 
Reply
Old Feb 25, 2022 | 08:13 AM
  #27  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

I can blow out Greg without vac, but it's not like blowing through a pipe there is a bit of resistance. Does that sound right?
 
Reply
Old Feb 25, 2022 | 09:17 AM
  #28  
Greg in France's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2012
Posts: 14,600
Likes: 10,795
From: France
Default

Yes, sounds right.
 
Reply
Old Mar 4, 2022 | 10:06 AM
  #29  
brinny's Avatar
Thread Starter
|
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2015
Posts: 1,565
Likes: 477
From: Yorkshire U.K.
Default

Greg, I found a new Rochester valve on eBay at a good price. However it has the outlets marked up opposite to the ones we use. I’ve fitted as per the markings. I’ve read on jag lovers others have used these. Will it be ok do you think? Also while not easy to blow through it did seem easier than my old one.
 
Reply
Old Mar 5, 2022 | 03:31 AM
  #30  
Greg in France's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2012
Posts: 14,600
Likes: 10,795
From: France
Default

Brinny
As long as it works as it should when fitted (ie allows air in under vac and out with no vac and only mild pressure) it will be OK.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
saggyjag
XJ6 & XJ12 Series I, II & III
29
Mar 20, 2021 07:53 AM
magnetron
XJ6 & XJ12 Series I, II & III
24
Sep 17, 2020 08:01 AM
Silver Flyer
XK8 / XKR ( X100 )
4
Dec 12, 2015 09:57 AM
Linda's Jag
XK8 / XKR ( X100 )
1
May 8, 2011 08:43 PM
remosusa
XK8 / XKR ( X100 )
7
Jan 12, 2008 04:51 PM

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



All times are GMT -5. The time now is 04:51 PM.