New Fuel System, Bad Gas Smell, Advice

[richsrq]

I have installed a new surge tank, 6AN, 10AN lines and external pump and a Tomei fuel rail in the car and have a really bad smell of gas. I do not have the lid (cover) bolted down because the way I am running my lines but know of someone that has his cover off as well and he gets a very faint smell. I am also missing my rear speakers so the fumes penetrate the inside of the car.

I can let the car run for twenty minutes and use lintless blue towels and wipe all the fittings and where it comes out and back into the tank and surge tank and I never find the towels get wet. I have posted a couple of pics to show how I did it. Can pressure be pushing past the black ring the holds the intank pump in place? Is the gas tank sealed on the bottom of the car so when the top cover is on it is completely sealed? The original breather is still plugged in.

Has anyone else gone through this? I am scared to start my car. I have to open it up for a few minutes to clear the fumes out.

Edited January 13, 2009 by richsrq

[400kw]

mate im going through the same sort of thing ..i would try and put the filler from the standed tank to the bottom of the surge tank ,then have the return form engine above that ,and then have the return to standed tank out ofthe top if that make sense....are you using speedflow fittings ?

i have gone right through my car and put sealent stuff on all fitting ,it has made it better .

just my thoughts cheers

[richsrq]

mate im going through the same sort of thing ..i would try and put the filler from the standed tank to the bottom of the surge tank ,then have the return form engine above that ,and then have the return to standed tank out ofthe top if that make sense....are you using speedflow fittings ?

i have gone right through my car and put sealent stuff on all fitting ,it has made it better .

just my thoughts cheers

I will look into relocating the line you were talking about. I am using AN fittings. I used a liquid teflon on all the fittings going into the surge tank (they leaked before I did that and they were a 3/8 NPT) and it stays dry. I did not put sealant on the AN side of the fittings though.

[Guilt-Toy]

any fuel system in the boot is going to stink out the car. nothing you can do about it

[Swiper the Fox]

any fuel system in the boot is going to stink out the car. nothing you can do about it

change the lines to teflon or hard metal bent pipe and your smells will disappear.

its the rubber line 'sweating' fuel. Funny thing is when we race the car with leaded fuel...no smell...its only unleaded that sweats.

Edited January 14, 2009 by DiRTgarage

[R31Nismoid]

You can buy lines/hose that do not sweat, they are not cheap however

I get a nice smell everytime i get in, honestly you do get used to it and 30 seconds of driving with the windows down gets rid of it.

You notice it more in the heat, in winter mines not bad... one day ill get the expensive hose!

[PSI Parts]

Teflon hose is not as expensive as you may think, the expensive part is changing all the hose ends as they are completely different. We do have SAU pricing on all Earls products though.

Here is a picture of what we did to help combat the dreaded fuel smell. I'm also happy to report that the fuel smell from all the teflon lines is only noticeable once in a blue moon, although I'm building an enclosure for the surge tank which should help even more.

[richsrq]

Teflon hose is not as expensive as you may think, the expensive part is changing all the hose ends as they are completely different. We do have SAU pricing on all Earls products though.

Here is a picture of what we did to help combat the dreaded fuel smell. I'm also happy to report that the fuel smell from all the teflon lines is only noticeable once in a blue moon, although I'm building an enclosure for the surge tank which should help even more.

I would of thought that the line I was using and the fittings were the best to get. The amount of money I have spent to make this was stupid. I hate learning the hard way. Is the teflon hose a rubber hose with black teflon on the outside?

[PSI Parts]

The line and fittings you used are excellent for reliability and burst pressure, they just aren't the best for keeping the fuel smell in.

Teflon hose is a semi-solid inner teflon core with a braided stell outer, it can also be in a nylon sheath.

[Swiper the Fox]

I would of thought that the line I was using and the fittings were the best to get. The amount of money I have spent to make this was stupid. I hate learning the hard way. Is the teflon hose a rubber hose with black teflon on the outside?

no teflon hose is the same as the hose you have but inside instead of having black rubber its clear/white plastic (teflon) and needs different style fittings to fit it.

[Shaun]

Yeah, its a shame you didnt use the teflon lined braid. I used the teflon stuff in my set up after hearing of similar stories, and ive never had a problem with smell.

Shaun.

[dangerman4]

its a bit ghetto

but you could cover your lines with 1/2 inch poly pipe, and tape up the ends, that would stop the smell until you change to solid or teflon.

[richsrq]

no teflon hose is the same as the hose you have but inside instead of having black rubber its clear/white plastic (teflon) and needs different style fittings to fit it.

What kind of fittings work with the teflon hose? Are they the barbed type that you need to soak the ends of the hose in boiling water to expand it so to get the hose on?

Thank you all for your input.

[AD4M]

just curious the guys using teflon how abouts do you go connecting it to the stock fuel pump cradle? just a normal hose clamp over the hose?

[PSI Parts]

What kind of fittings work with the teflon hose? Are they the barbed type that you need to soak the ends of the hose in boiling water to expand it so to get the hose on?

They are the same style screw on AN fittings you have used before, however they use an olive to give a good seal.

This picture shows teflon braid and fittings, the easiest way to determine if the line is teflon is that the hose end will have a slight curl up where it meets the hose.

just curious the guys using teflon how abouts do you go connecting it to the stock fuel pump cradle? just a normal hose clamp over the hose?

We used an EFI hose clamp, not just a normal hose clamp. Which was the same way we attached the hose to the hard fuel lines running under the car.