Got it back today after 2 months.
Shop agreed that the canister is not the problem.
They found a leak under the tank the first shop missed.Repaired it. Actually the tank shop at first said no leaks, when my shop put the tank back, it leaked, so took back and found the leak and repaired it. Hoping.
They cleaned the carpet back there, but still smells like fuel. Not as bad but still there.
To replace fuel rails over two grand, so just had the tank repaired.
Going to clean entire interior with the old baking soda treatment, and if still bad will have it detailed professionally.
I’m at the point where I have more in it than it’s probably worth. Have to decide how much I want to invest vs return.
Got it back today after 2 months.
I recently went through replacing my tank and associated fuel lines in the trunk. I get what you mean about the lingering fuel smell as I’m still dealing with it somewhat too.
I bought a steam cleaner and have found that steaming the carpet has really helped the smell. I have no idea if steam cleaning is bad for the wool but I’m not worring about it since the carpet is trash if the smell doesn’t come out. Baking soda and vinegar had minimal effect when I used them but maybe you will have more success.
Seems that stale gas is a very lasting odor.
You can make a new pad under tank using a yoga mat…change brass tank ferrules and the metal tubes…see articles about that on this site…good luck
My experience is it goes away after a short while, once the source is dealt with properly.
It certainly got MUCH better very quickly for me. But a fair quantity of gas also got on part of the carpeting so that’s where the smell is lingering.
I also wish I could leave my trunk open for days to air but alas I have no garage space.
They were supposed to replace the pad under the tank, but I can’t get in there until the weekend.
I opened the door today and almost passed out with gas smell. My trusty nose found the smell in the rear seat area. So even though they cleaned the trunk, they didn’t pull the rear seat. That yellow pad between the seat back and the frame in front of the tank i bet is soaked with gas. I will tear out that pad . Do you think i should replace that pad for soundproofing or just go without?
Maybe that idea of a thin yoga pad could go there?
I only replaced the under tank mat. The yellow piece behind my seats was dry and in perfect condition (and not smelly). I guess it depends from where on your tank the leaks were coming.
Also it is at least possible that even though it smells very bad in the back seat it is due to the vents into the trunk (there are 2) behind the back seat more than any of the physical material behind the seat itself.
Taking the tank out is a bit of a pain for sure. I would do everything you think you will want to while it’s out the first time so as to not have to take it out (hopefully) ever again.
I even sanded and re-sprayed the shelf that the tank sits on while mine was out.
Tank is back in and i assumed they would replace the mat…will pull the spare tire tonight and check, if not replaced I will take it back and make them do it. I would never try to pull the tank myself. Still going to pull the back seat and sniff that yellow pad…if soaked i will pull it out and clean really well…stay tuned.
I would think if the tank had a leak, it would be the bottom (mine was). And unless you parked facing downhill, it would leak out the back into the trunk (mine did).
They may have fixed the tank leak. Are you sure all the hoses and connections back there are leak free?
Do you only smell gas in the back seat, and not the trunk? That is odd.
Gasoline evaporates fairly quickly, so I would think after a week, you should not smell gas vapor unless there is still a leak.
Yes I"m hoping it will evaporate.
I just had a thought…how about something as simple as the gas cap?
Can’t find any like it online OEM with door key lock, so is it ok to use one from Autozone to test?
still going to do my best to scrub away the carpets and back seat area this weekend.
Found out my shop took the pad out under the tank, cleaned it and set it in the sun for a day.
Wish they would have just replaced it, but tank is back in for now…too late.
Let the whole car air out as much as you can. I think Greg is right that the smell will improve if leaks are gone.
There are a lot of connections to the tank in the XJ-S. It might be worth going over all of them yourself to make sure that the shop hooked everything up properly and leak-tight. After doing the entire tank/fuel line replacement myself, I was glad that I took my time with the project. It meant my car was parked a bit longer, but also that I personally, carefully inspected every single bit of the system.
the gas cap on a properly fitted XJS tank should not be vented (though some people have, I understand, put holes in the cap and done away with some/all of the emissions system. This, in my opinion, is not at all necessary though, as there are many ways to improve the emissions system.
Earlier cars like my '83 had a trapezoidal gas filler door that was simply spring loaded with a little notch protruding so you could grab it to open it. Underneath was a totally sealed cap. There was no locking feature. Some owners – and some dealers – replaced the totally sealed cap with a locking cap, but those don’t seal, fuel vapors go right through the tumbler. Later cars, I’m not sure when, went to a circular filler door with a key latch on it. The cap underneath is still a total seal. All venting from the XJ-S tank is supposed to be through the carbon canister, not a leaky filler cap.
dmaggs I will double check all lines and connections…no vent cap…got it thanks
Kirbert, you are correct I have the trapezoidal gas filler door. My bad…not a locking cap. I think the cap is from the factory…very worn.
I’ll find a no vent cap and try that.
I sniffed out where the gas has pooled in the backseat area. Passenger side rear floor.
Removed the rear seat bench, floor carpet and padding. Totally saturated. Scrubbed with baking soda, vinegar, water. Letting it dry out, then Saturday taking it in for professional interior cleaning.
Can’t tell if still leaking as I would have to remove the tank again. Hoping this cleaning will do the trick.
Then rear view mirror on driver side started moving all by itself and buzzing. Removed the fuse for now. LOL never ends.
Hmm, gasoline evaporates rather quickly, that’s odd to find liquid a week later. I suspect there’s still a leak, if so, whoever did tank will do it again on guarantee?
Is passenger side the same as gas cap side?
Yes I think they will honor their work. thought since detail is so cheap I’d try that first.
No gas cap is on other side.
I replaced the gas cap just to be safe also.
I’ll let you know what happens.
I was just thinking, if the gas cap inlet wasn’t sealed properly, it could leak on fill up.
Yeah, mine used to do that. I think it was water getting inside the door and shorting out the connector to the switch that operates the mirrors.
I think you are right (again)…the piece of windshield chrome molding popped up this week, came un-glued, and it rained here, so i’ll get that closed also. Under the chrome there is a big mess of old glue. I’ll sand that out. What kind of adhesive would you use?
No idea. My solution was to open up the door panel and seal up the connectors themselves.