jakesdad 2005 s type fuel tank cap seal help please

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Feb 5, 2018 | 07:37 PM
  #1  
Ok, friends, many of you have been trying to help me with a troublesome lean code issue on another thread. I finally pulled the rear seat and the dust caps over the tank caps and discovered the following......The driver side cap is bone dry and does not have fuel odor. However...the passenger side had an undeniable fuel odor when I pulled the dust cap, and although there is no wet fuel there at the moment, I believe there is a stain that you might be able to discern in the photo I will try to attach that would indicate a fuel leak..
So I need your help again. I have seen some threads about this that indicate it is, or can be a somewhat easy diy job, is it? If I understand other threads correctly, there is a steel clamp ring under the plastic outer ring in the photo, and that the steel clamp ring is tightening an inner seal ring of some sort. Does the entire cap have to come off/out of the tank to replace this seal?
I don't know if this seal is causing or contributing to my evap problems but now I've got to fix it. If I have the tools and aptitude to replace my fuel injectors as I recently did, do I have the skill required to remedy this seal issue?


As always, I appreciate your help.
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Feb 5, 2018 | 09:28 PM
  #2  
If I'm not mistaking there should be a hose attached to that bottom plastic tube piece at the bottom of the picture. (Maybe I'm wrong, actually... I hope I'm wrong)

That (along with the ring seal issue) could be your evap culprit for sure.

I'll await someone else to chime into my first point regarding the pic.
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Feb 6, 2018 | 06:09 PM
  #3  
Quote: If I'm not mistaking there should be a hose attached to that bottom plastic tube piece at the bottom of the picture. (Maybe I'm wrong, actually... I hope I'm wrong)

That (along with the ring seal issue) could be your evap culprit for sure.
Good eye! That certainly looks like a hose or a fitting is missing. Note the clean outline around that protruding fitting. It sure looks something was there until very recently. Maybe there's a line that fell down?

With any luck, the ring seal may be just fine. I'd figure out that apparent missing line before worrying about the ring seal.
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Feb 6, 2018 | 08:36 PM
  #4  
I have what might be the same issue in that there is a fuel smell after filling the tank for a while then it goes away. I keep saying that I need to remove the rear seat and cover to see if I can detect the leak. Seeing that you have already done that, have you thought about filling the tank with everything exposed to verify if the stain is actually the leak?
If I see a small leak around the edge of the cover I think I would consider a sealer that can work with gasoline rather that risking removal of the cap with either a screw driver and hammer or the homemade tool from a properly sized PVC pipe with fins cut out.
Then there is the possibility that white nipple just needs a cap on it.
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Feb 6, 2018 | 09:41 PM
  #5  
The link below has some detailed information concerning the fuel pump with good photos.

https://www.jaguarforums.com/forum/s...-pumps-130587/

The photos don't show the extra opening that you have. Perhaps the top cover is for a different fuel pump.

I am in the process of replacing the fuel pump. But mine is an earlier model and has different fuel line connections. As has been said it looks like something should be on the opening. If you can feel around the perimeter of the fuel pump opening it might be found. If not try plugging and seeing if it cures your problem.

If you do have to take off the fuel pump the link has a home made tool for this. However, a piece of wood and a hammer will work just as well to unscrew the top. Placing the wood on the outer plastic lugs of the cap and hit it with the hammer. You need some force initially.
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Feb 6, 2018 | 10:05 PM
  #6  
To the OP - the homemade tool referenced will not work on your fuel pump cap. It's a different design than the earlier models. If you put a hammer and piece of wood or exert any force on that cap you'll break it or possibly ignite gas fumes/fuel clearly present.

Secondly, you really need to get to the bottom of that exposed port on top of the pump. Definitely something is missing.

You don't want to drive with exposed fumes of that kind.

Might be time to throw in the towel and get it to an expert, quickly if you cannot identify what goes in place at that port.

Google search: 2005 Jaguar S Type Fuel Pump and view images.

Looks like a cap.
Reply 1
Feb 7, 2018 | 03:53 AM
  #7  
Jakesdad
I didn't mean to lead you astray with the homemade tool link. Thankfully, Albonano is on the job to see this and correct the information for you.

I believe the Jag tool is expensive. If you need a tool there are universal tools for this purpose that are not too expensive on ebay or at motor parts stores. I have used a piece of wood and a hammer on more than one car not only the Jaguar with good results. However, I could understand if you had some trepidation on using this method.
Paul
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Feb 7, 2018 | 06:15 AM
  #8  
You probably want to pour a coffee and read through this https://www.jaguarforums.com/forum/s...leaking-67253/
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Feb 7, 2018 | 09:00 AM
  #9  
Quote: You probably want to pour a coffee and read through this https://www.jaguarforums.com/forum/s...leaking-67253/
Norri....and all others....I am aware of this recall, and as the original owner, I took this car back to the dealer when the recall came out and they supposedly fixed the recall issue in 2007. The dealer is no longer in business but other jag dealers have looked up my vin and confirmed that an entire new tank was installed in 2007 by that dealer. The last person to ever pull that rear seat and expose the fuel pump other than me three days ago was the jaguar dealer service technician. I never looked in there to check his work. I have no idea what the mysterious white nipple is in the photo, but I also don't see how any hose or other fitting could fit in there, since the black dust cap seems to lay almost directly on it. From research I have done, it seems that the tank and access ports are identical to Lincoln and other ford products , I took the car to a local independent mechanic that I have trusted in the past and got his opinion. He looked up the fuel pump seal parts and labor and has quoted me $190 all in for him to fix it. So my plan is to pay him for that service, as well as an evap smoke test, then fill the tank to the brim and examine for leaks. If it leaks after fill up, I can just return to him and demand repair. Thoughts?
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Feb 7, 2018 | 09:51 AM
  #10  
Quote: Norri....and all others....I am aware of this recall, and as the original owner, I took this car back to the dealer when the recall came out and they supposedly fixed the recall issue in 2007. The dealer is no longer in business but other jag dealers have looked up my vin and confirmed that an entire new tank was installed in 2007 by that dealer. The last person to ever pull that rear seat and expose the fuel pump other than me three days ago was the jaguar dealer service technician. I never looked in there to check his work. I have no idea what the mysterious white nipple is in the photo, but I also don't see how any hose or other fitting could fit in there, since the black dust cap seems to lay almost directly on it. From research I have done, it seems that the tank and access ports are identical to Lincoln and other ford products , I took the car to a local independent mechanic that I have trusted in the past and got his opinion. He looked up the fuel pump seal parts and labor and has quoted me $190 all in for him to fix it. So my plan is to pay him for that service, as well as an evap smoke test, then fill the tank to the brim and examine for leaks. If it leaks after fill up, I can just return to him and demand repair. Thoughts?
Folks, me again just adding something interesting. I found this pic from John Baker thread in December about his fuel pump issue. The pic shows the same white nipple that I have on my fuel pump cap, but his pictured nipple is on the opposite side cap. I am wondering if when the dealership did my safety recall in 2007, did they use an interchangeable cap, but the nipple is not really open to the tank, more just a plug? I don't see a fitting on my driver side cap that would accept a fuel crossover from the fuel pump side.
Weird.
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Feb 7, 2018 | 10:15 AM
  #11  
Quote: He looked up the fuel pump seal parts and labor and has quoted me $190 all in for him to fix it. So my plan is to pay him for that service, as well as an evap smoke test, then fill the tank to the brim and examine for leaks. If it leaks after fill up, I can just return to him and demand repair.
How about this plan? You give me the $190. I'll fill up the tank (will also need your credit card) and watch to see if fuel comes out of that mystery fitting. From there, two eerily similar scenarios:

1) If fuel comes out, more research will be needed to determine why there's an open fitting and if it should just be capped, or if there is supposed to be a line there.

2) If fuel does NOT come out, more research will be needed to determine why there's an open fitting and if it should just be capped, left open, or if there is supposed to be a line there.

On the slim chance fuel is leaking from the seals, and not the open mystery fitting, I'll drop off the car at your mechanic and give him the $190 to repair that.

After that, one more step is still required:

3) More research will be needed to determine why there's an open fitting and if it should just be capped, left open, or if there is supposed to be a line there.

Read between the lines and you will hopefully realize I'm giving you a hard time, but don't go making more work for yourself than necessary. Using a portable gas tank, slowly top off the tank at home. Have a cap and rags ready in case fuel does come out of that mystery fitting. It it does leak there, why spend $190 replacing seals that may be perfectly good?
Reply 1
Feb 7, 2018 | 10:18 AM
  #12  
That picture is NOT from John Bakers thread actually. It is a picture of my wifes that I took and asked about removal in this thread:
https://www.jaguarforums.com/forum/s...estion-191781/

Not that this tid bit matters to much, right, Joyces Jag is code free with that "nipple" not attached/connected to anything.
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Feb 7, 2018 | 10:21 AM
  #13  
Quote: How about this plan? You give me the $190. I'll fill up the tank (will also need your credit card) and watch to see if fuel comes out of that mystery fitting. From there, two eerily similar scenarios:

1) If fuel comes out, more research will be needed to determine why there's an open fitting and if it should just be capped, or if there is supposed to be a line there.

2) If fuel does NOT come out, more research will be needed to determine why there's an open fitting and if it should just be capped, left open, or if there is supposed to be a line there.

On the slim chance fuel is leaking from the seals, and not the open mystery fitting, I'll drop off the car at your mechanic and give him the $190 to repair that.

After that, one more step is still required:

3) More research will be needed to determine why there's an open fitting and if it should just be capped, left open, or if there is supposed to be a line there.

Read between the lines and you will hopefully realize I'm giving you a hard time, but don't go making more work for yourself than necessary. Using a portable gas tank, slowly top off the tank at home. Have a cap and rags ready in case fuel does come out of that mystery fitting. It it does leak there, why spend $190 replacing seals that may be perfectly good?
No **** Karl, I was thinking the same thing when I read his latest post this morning!!!! I can honestly say that this is the first time, I have sworn on this site in 9 years!
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Feb 7, 2018 | 10:33 AM
  #14  
Quote: Norri....and all others....I am aware of this recall,
It wasn't really for the recall that I included the link, there's a lot of good discussion and pictures there too.
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Feb 7, 2018 | 11:04 AM
  #15  
Rick,

When I look at the posted photos in this thread, your fuel tank cap seal area appears to be far cleaner than jakesdad's. Is that simply because you wiped yours clean before taking your photo? Or does jakesdad have a separate issue of dust and grime getting to an area where it should not be able to?

I have never had to expose that area in my car so I have no familiarity in this case (my car had its fuel tank replaced under the recall prior to us purchasing it in December 2008)....
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Feb 7, 2018 | 11:07 AM
  #16  
I half wiped it off. Not quite as bad as Jakesdads.
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Feb 7, 2018 | 11:17 AM
  #17  
I wonder if that white plastic nozzle functions as some sort of breather port. Where is Brutal when we need him....
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Feb 7, 2018 | 11:30 AM
  #18  
I think it is blanked here's a pic from Docuzzie, looks the same, just more leaky!

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Feb 7, 2018 | 11:37 AM
  #19  
If I remember correctly, Docuzzie's car was a 2005 STR. That may explain the different set-ups on the top of the cap seal assembly....
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Feb 7, 2018 | 04:25 PM
  #20  
?
Thanks guys for trying to help me figure it out. Too bad a thick skin is sometimes required on these forums when you put yourself out there looking for help. KR..I know you're giving me a hard time but I take it with a grain of salt. No hurt feelings. There are other people who just don't know how to handle written communication without being a-holes. These are the types who are difficult to work with in emails or texts.
this forum is loaded with well intentioned people who us less experienced diy guys count on for help.
The pic that Norri last posted is EXACTLY what I have on my car. There is no fitting on that nipple, nor on joycesjag pic. I'm hoping Norri is correct that it is a blank plug for some reason. I will find out when I gladly pay my independent mechanic $190 to FIX the leak. That is remarkably cheap. A Jaguar dealer would charge me more than that just to look at it and then try to bend me over.
Again, thanks for everyones help, even those wo are forced to swear at my inquiries.
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