Hi

The boot (trunk) smells fairly strongly of fuel and has done since I bought the car 4 years ago. The smell also gets into the cabin and outside the car in the garage. Even though I had both tanks and most fuel lines replaced whan I bought the car.

My new toy (TPI 725L combustible gas leak detector) tells me that fuel permeates through all of my fuel hoses around the spare tyre. The hoses are mainly recent R9 'fuel injection' hose with some NBR nitrile braided rubber.

Disappointed that even the new R9 hose is part of the problem.
My question: How to be sure that hose is good quality and not some knock off imitation or fake hose? Which brands? Which (UK) suppliers? Would PTFE hose be an idea (even though it needs new fittings too)?

Thanks in advance.

S Plug

 

I had good luck with marine-spec hose as described here:

https://www.jaguarforums.com/forum/x...-218246/page2/

It eliminated most of the fuel odor problem in my trunk. A trace still remains but I still think the marine grade hose is a good idea.

Cheers
DD

 

I haven't gotten around to re-plumbing my '72 yet, but I'm planning to use Earls Vapor Guard Hose everywhere. Hopefully that will do the trick...

Greg

 

Thanks for the help. I’ll be replacing the hoses soon.

 

SAE 30R14T2 is the standard for automotive fuel injection systems these days. It should be available at your auto parts stores. I bought some at Napa (USA) for my X305 XJ12 fuel rail crossovers, after educating myself on the subject (and a vast subject it is). I almost used some old J30 R7 "fuel injection" hose I had on hand. Mistake avoided.

Hose with that rating is a high pressure, high temperature barrier hose. It meets the California Air Resources Board standards, the highest standards in the USA for emission compliance. Most manufacturers these days use fuel hose that meets CARB standards. It is required by law in the USA states that have adopted those standards.

I don't often browse the Series forum, but my timing was just right for this thread!

 

Gates sells a line of hose called "Barricade" that's designed for modern fuel injection systems.

On the Gates website is a YouTube video discussing their hose, and they make the claim that their hose reduces emissions and aids fuel economy (???)

They go on to say that conventional hose is permeable, and a typical car without barrier type hose will lose about a gallon a year of fuel through the hoses.

In light of how my Jag's trunk smells when I open the boot, I can believe Gate's claim. A gallon of fuel getting into the trunk would be an ample amount to explain the odor.

Going to try the Gates 'Barricade' hose and change out all the hoses in the boot.

 

Considering the small space, fully enclosed, a drop or two....or just osmosis....can give quite an odor. If your is especially bad may well have to scrub the carpets and panels as well, as they absorb a of of odor

Looks like it's J30R12 and J30R14 rated, so it should be good. Certainly better than 30 year old originals, if that's what you're running

Cheers
DD

 

I got a small kick from the claim of increased fuel economy!! Aye, the odor is a fuel and contributeds zip to moving the car...

Alex Carnara's power vented boot, using s discarded computer fan??? One is in my odd lot pan...

And likely to stay there...

Carl

 

Thanks e015475 (sorry don't know your name, and it isn't in your profile). I installed the Gates Barrier fuel injection lines in my carburetor'd SII both in the trunk and the engine compartment. That stopped all my fuel smells. Although I found a mix of 3/8" and 5/16" connections both in the trunk and the engine compartment. Luckily I ordered 8' of the 5/16", heated the ends of the hose with a heat gun, put a dab of liquid dish soap on the hard connection and it slipped right on. I also bought high end SS fuel line clamps with no perforations in them - just because. All the previous flex lines were also 5/16" which is why that's what I ordered. And never had a starvation problem, as it seems the hard fuel lines running aft to forward are 3/8" and that's what the system was designed for. Again... the Forum is a great place to get sage advice!

 

Bill, I found this handy conversion chart online and find it very useful. When I replaced the flexible fuel lines in my S3, I found 7mm, 8mm and 12mm in the boot. Of course I was fresh out of metric fuel line in my shop. I used the Gates barrier line also because it is has a higher PSI rating for fuel injection pressures.

Dave

 

Mr. Watson-

My name is Phil Dooley. In a burst of creativity 25 years ago, and under the delusion that I had anonymity on the web if I didn't use my name, I instead used my employee number 'e015475' as a username on many boards.

Any delusion of privacy and anonymity evaporated many years ago but I continued to use 'e015475'- I'll update my profile as soon as I'm finished with this missive.

Great news that the barrier hose has solved the fuel odor issue for you. I did my engine bay, but need to follow my own advice and get off my *** and do the boot too.

Thanks for being the 'first penguin'!

Phil Dooley