Gas smell

Tnfastbk · Jun 10, 2024

After two years finally took the car for a test run. I had made may changes to the car but the one I want to focus on right now is the new fuel system. First of all nothing is stock on my car, I installed an Aeromotive stealth tank with the in tank pump with evil energy -6 fittings along with their nylon braided fuel hose. The car did great, except when I pulled into the garage and shut the door the garage had a smell of gasoline. Checked every fitting with no noticeable leaks. As far as I know there is not a vent on the tank, I use a vented cap. I looked locally for a new cap but no one had one in stock. Also one other thing is I am getting a lot of fluctuation in my gas gauge when driving. The tank says its baffled so I found that surprising. Any thought??

c9zx · Jun 10, 2024

This may or may not be relevant but, on stock configuration (carb) I had installed the big "rubber" seal for the filler neck upside down causing a fuel leak when tank was more than half full. Sorry if that is a non-helpful "hail Mary". Chuck

Steve McMahan · Jun 10, 2024

If you’re not using something similar to the stock vent hose to charcoal canister approach, the tank is going to vent through the cap into the closed garage space. If you are venting it in the traditional way, some part of the system is failing.

But, as I remember in days of old, even working vent system still left a bit of fuel odor.

Tnfastbk · Jun 11, 2024

c9zx said:
This may or may not be relevant but, on stock configuration (carb) I had installed the big "rubber" seal for the filler neck upside down causing a fuel leak when tank was more than half full. Sorry if that is a non-helpful "hail Mary". Chuck

I think I put it back on the same way it came off but who knows. I may not have.
Does anyone have a picture of what is the correct orientation?

rcadd1ct · Jun 11, 2024

Gas cap shouldn’t be vented.

Top of tank vent should go to the hard line to the front. Hard line ends behind engine in the center and goes to the charcoal canister to filter the fumes/smell.

Tnfastbk · Jun 11, 2024

rcadd1ct said:
Gas cap shouldn’t be vented.

Top of tank vent should go to the hard line to the front. Hard line ends behind engine in the center and goes to the charcoal canister to filter the fumes/smell.

"After two years finally took the car for a test run. I had made may changes to the car but the one I want to focus on right now is the new fuel system. First of all nothing is stock on my car, I installed an Aeromotive stealth tank with the in tank pump with evil energy -6 fittings along with their nylon braided fuel hose."

You are correct for a stock set up.

rcadd1ct · Jun 12, 2024

Tnfastbk said:
"After two years finally took the car for a test run. I had made may changes to the car but the one I want to focus on right now is the new fuel system. First of all nothing is stock on my car, I installed an Aeromotive stealth tank with the in tank pump with evil energy -6 fittings along with their nylon braided fuel hose."

You are correct for a stock set up.

I have aeromotive stealth tank and -6AN lines up front to a termX stealth 4150 on top of a B&M supercharger.

I don’t think mine qualifies as stock either.

Tnfastbk · Jun 12, 2024

rcadd1ct said:
I have aeromotive stealth tank and -6AN lines up front to a termX stealth 4150 on top of a B&M supercharger.

I don’t think mine qualifies as stock either.

So does that tank have the top vent as well? Maybe I missed it. I had it capped off on my stock tank and used the vented cap with no issues. The tank has been in for almost two years.
I emailed Aeromotive to see what they say.

rcadd1ct · Jun 12, 2024

Tnfastbk said:
So does that tank have the top vent as well? Maybe I missed it. I had it capped off on my stock tank and used the vented cap with no issues. The tank has been in for almost two years.
I emailed Aeromotive to see what they say.

Yes the top hat think in the center if the rank up top is the vent. It goes to a hard line that ends on the firewall behind the engine.

That goes to the charcoal canister in the passenger fender well. Stock one line would do to the air cleaner to reburn. I have a little pod filter on mine.

Vent is circled in the pic

Tnfastbk · Jun 12, 2024

Wonderful. Now I will have to pull it to check it out.

Thank you

mrgmhale · Jun 12, 2024

Here is some documentation that should help. In the section on Emission Control devices the Fuel Vapor Control section is a pages into the document. I also have some YouTube video information on the fuel evaporative system as well:

https://youtu.be/n9woMnHByts

https://youtu.be/SsbtiPWY9sU

Spike Morelli · Nov 18, 2024

rcadd1ct said:
I have aeromotive stealth tank and -6AN lines up front to a termX stealth 4150 on top of a B&M supercharger.

I don’t think mine qualifies as stock either.

I notice that you run a B&M mini-blower. They have gone obsolete, as B&M, Holley, and Weiand no longer make these. Just for information, if you don't have a reputable supercharger shop already, I work at The Blower Shop, in Boise Idaho, and we certainly overhaul these superchargers, and carry the necessary gaskets, seals, bearings, upper pulley combinations. We also re-strip the nylon strips every overhaul. Should you ever require servicing, we are a source. I can, however, tell you that although we can supply you with the components to overhaul a supercharger yourself, as simple as they seem, if you arent experienced in supercharger repair, trying to do the work yourself almost always ends up with the customer sending their partially un-assembled unit in to have it done. Any way, if we can be of any help, don't hesitate to give us a call.

rcadd1ct · Nov 19, 2024

Spike Morelli said:
I notice that you run a B&M mini-blower. They have gone obsolete, as B&M, Holley, and Weiand no longer make these. Just for information, if you don't have a reputable supercharger shop already, I work at The Blower Shop, in Boise Idaho, and we certainly overhaul these superchargers, and carry the necessary gaskets, seals, bearings, upper pulley combinations. We also re-strip the nylon strips every overhaul. Should you ever require servicing, we are a source. I can, however, tell you that although we can supply you with the components to overhaul a supercharger yourself, as simple as they seem, if you arent experienced in supercharger repair, trying to do the work yourself almost always ends up with the customer sending their partially un-assembled unit in to have it done. Any way, if we can be of any help, don't hesitate to give us a call.

Thanks.

I will keep it in mind.

So far it has only seen about 1200 miles as it sat sealed up after I bought it in the early 90’s.

Gas smell

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