Fuel Fuel line questions & gas smell in engine bay

FastDriver

My dad had a bra
SN Certified Technician
Sep 5, 2001
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First time I've posted a tech question in a long time. I'm not sure I've ever messed with the charcoal canister and fuel evap stuff on these cars, because they've mostly been removed before I've even owned them. I need a little help with what to do here.

I've been getting the smell of gas when driving around in the car. I thought it was coming from the filler neck area, and it probably was. So, in my "Blackjack" project thread you can see that the leaks/seals/gaskets there have been fixed. I'm still getting a gas smell. I traced the fuel lines, checked around the tank, filter, and traced the lines up while on a creeper underneath the car while a buddy primed the pump to create fuel pressure, and I couldn't find any leaks or issues. I popped the hood and in the passenger-side-rear corner of the bay closes to the cowl, I caught a whiff of gas, and then I traced all of the lines in the engine bay while priming the pump but still no luck. So, I had an idea and pulled the wheel well liner.
This line smelled strongly of gas:
1659826458309.png


I'm guessing it may have originally been a line that runs to the charcoal canister, or something. Can anyone confirm?

Tracing it back, I found that at this point it went from a metal to a plastic/rubber line... doesn't seem right.
1659826849428.png


You can tell by the subframes and the transmission where I'm at on the car... not too far behind the front passenger wheel well. So, this seems to be/hopefully is my gas smell issue. What should I do with this?

My guess is that this line is the vent for the fuel tank that would have run through the charcoal canister, originally, in order to filter the gas-ish smell. Given that there's no charcoal canister, what is typically done with it to prevent the smell of gas? What about the fuel tank vent? Do I need to drop the tank and put a breather on it, or something?
 
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evintho

5 Year Member
Nov 12, 2003
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Trace the line all the way back. It's probably the vapor return line from the charcoal cannister back to the tank, hence your gas smell.
A lot of guys have the gas smell with the cannister removed. Easiest fix is, replace the charcoal cannister and all it's accessories. Won't hurt your horsepower, good for the environment and will remove your gas smell.
 
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FastDriver

My dad had a bra
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Sep 5, 2001
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Trace the line all the way back. It's probably the vapor return line from the charcoal cannister back to the tank, hence your gas smell.
A lot of guys have the gas smell with the cannister removed. Easiest fix is, replace the charcoal cannister and all it's accessories. Won't hurt your horsepower, good for the environment and will remove your gas smell.
Okay. What are the other accessories?
 

evintho

5 Year Member
Nov 12, 2003
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Do you still have the purge valve off your manifold?

2010-02-11_115746_92_mustang.gif


Part Number Description
1 - Engine Evaporator Hose to Large Nipple
2 - Tank Evaporator Hose to Small Nipple
3 40920-S2 Screw
4 9C987 Fuel Vapor Return Hose and Valve Assy
5 9E455 EGR Vacuum Control Connector
6 6A886 Crankcase Hose to PCV
7 - Battery Tray
8 - Sidemember
9 9D665 Fuel Vapor Canister Bracket
10 381877-S2 Screw (2 Req'd)
 
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FastDriver

My dad had a bra
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No. It's on order, now, along with a canister, the wire connectors & the vacuum hoses and adapters. ~$160 between Rock Auto and LMR.

Thanks for the help. This is probably my issue, and hopefully that clears it up.
 

Dan02gt

mazing how much gas smell came from that tiny hole
10 Year Member
Mar 2, 2003
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I’m sure that will fix your issue. When I had my subframe connectors welded on they burned a tiny pin hole in the plastic line going to the charcoal canister and it was amazing how much gas smell came from that tiny hole.
 
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7991LXnSHO

wanna catch the space herp
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I’m sure that will fix your issue. When I had my subframe connectors welded on they burned a tiny pin hole in the plastic line going to the charcoal canister and it was amazing how much gas smell came from that tiny hole.
I’m glad your car did not light up. The last two lines are funny out of context.
 
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Mstng93SSP

You have a nice rear end there Dave.
15 Year Member
Nov 29, 1999
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Did you already order all the parts? I have a used setup if you still need. Wayyyyy cheaper than new :cool: Not trying to sell stuff...don't ban me....just trying to help....

20220807_171207.jpg
 

Rdub6

So while I wait to figure out my rear end issues
Dec 29, 2017
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I see you’ve ordered vapor canister, so that should definitely help your issue.
To answer the question about the plastic to steel vent line (I don’t think it was answered) that’s the way it’s supposed to be. It should transition to steel right after it comes out of the wheel well. I would double check that the hard plastic line isn’t cracked somewhere. Looks like the kit only comes with the line going to the manifold.
 
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FastDriver

My dad had a bra
SN Certified Technician
Sep 5, 2001
4,750
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I see you’ve ordered vapor canister, so that should definitely help your issue.
To answer the question about the plastic to steel vent line (I don’t think it was answered) that’s the way it’s supposed to be. It should transition to steel right after it comes out of the wheel well. I would double check that the hard plastic line isn’t cracked somewhere. Looks like the kit only comes with the line going to the manifold.
Ok, thank you! I have a feeling that I'm going to need to figure something out with vacuum or rubber hose. I don't remember seeing anymore steel line running to the purge solenoid area.