Heavy Fuel Smell

[ChallengerHK]

I don't know how to answer that exactly.....but if the little ears have too much bend then they will lock up before they seat completely  is how I understand it....maybe best to wait for someone who as actual experience with this issue.

So what you're saying is that the ring itself might be flat but the ears are bent too far down, too far toward the tank, in theory?

[Bullitt-]

I think the other way around....ears stick out...what you hit to tighten..

[ChallengerHK]

Note to self:

1) Get wood dowel
2) Remove fuel tank sender
3) Check ear aligment

 

[Moparal]

Note to self:

1) Get wood dowel
2) Remove fuel tank sender
3) Check ear aligment

 

Also bend to adjust fuel level rod...

[Scatterbrain]

I've read several times folks having problems getting the replacement rings to tighten up well....I think they had to flatten them a wee bit to get them to seat completely

Still working on getting my replacement ring to tighten up...   

The ring has 3 points that provide the tension to make the seal.  It seems that the replacement rings don't have enough height to provide the tension against the sender.  In my case, it wouldn't even apply the most basic of pressure and the lock ring would move about with minimal ease.  I've been trying to bend it at the points to create more and more tension, but it must not be even because I still get some leakage.  It is possible that yours is doing something similar.   One day I hope to be able to put more than 5 gallons of gas in my tank ...  someday....   

[ChallengerHK]

Also bend to adjust fuel level rod...

Any guidelines on getting this right, or is it just trial and error?

[Moparal]

I will confess also. I had to adjust mine tighter after I filled up.  But I wonder if the vapor is coming from another sorce on yours. Bad or wrong cap, charcoal canister filter plugged. Bad vaccum lines to the breather system, ecs not tight

Take note as to when it is full if it is low or over full, then bend a little bit. Up for full and down for over full. won't take more than an 1/8 to 3/16. But the brand new brass float I had caused mine to be off. It was 1/4 full of fuel going in through the seem

[ChallengerHK]

I will confess also. I had to adjust mine tighter after I filled up.  But I wonder if the vapor is coming from another sorce on yours. Bad or wrong cap, charcoal canister filter plugged. Bad vaccum lines to the breather system, ecs not tight

Cap - what denotes a vented cap? I thought that, with Challengers with the ECS, none of the caps were vented?
Canister plugged - very likely, as it's original. I know that these are supposedly not serviceable, but a friend of mine told me that some guys have cut them open and replaced the filter material with stuff for acquariums. Possible? Good idea? How to reseal the canister?
I don't have a Thermoquad any more (Holley 4160), so that complicates things, as the line that would have run to the carb is open, but I don't detect any stronger odor there than anywhere else.

When absolutely topped off my gauge reads about 3/8 tank.

[Bullitt-]

vapor cannister filter is available...this info from Rockauto
1973 DODGE CHALLENGER 5.6L 340cid V8 (H) : Emission : Vapor Canister Filter    Related Parts
 
Item Price Core Total 
STANDARD MOTOR PRODUCTS Part # CF1  {CANISTER FILTER}
With 4.5 Inch Diameter
Choose: ($1.34) {5}+($1.59)
+ Sold in packs of {x}; Price reflects cost of each individual item, not the pack
 
     
FRAM Part # BA357  {AIR Vapor Cannister Filter}
Fuel vapor canister filter.
 
 $1.36 $0.00 $1.36 
AIRTEX Part # 7F1001   
 
 $1.40 $0.00 $1.40 

order from Advance
http://www.partsamerica.com/ProductDetail.aspx?MfrCode=FRA&MfrPartNumber=BA357

[ChallengerHK]

vapor cannister filter is available...this info from Rockauto
1973 DODGE CHALLENGER 5.6L 340cid V8 (H) : Emission : Vapor Canister Filter    Related Parts
 

Thanks Bullitt

[Moparal]

I have a very fresh 72 thermoquad rebuilt by holley and hasnt had fuel put into it yet

[ChallengerHK]

Thanks for the thought, Al. While I'm jobless I'm avoiding spending money on the car (And a load of other things too), but if you've still got it when I get re-employed and get rid of the debt I've incurred I might take it off your hands.

[Super Blue 72]

I'm real curious to see what you find.  I run my car for 5 minutes and sit in it and I smell like gas.  Wife always figures out when I sneak out to work on the car!    I'll be getting ideas from you here!   

[ChallengerHK]

I'm real curious to see what you find. 

So am I  . I can tell you that it doesn't happen unless I top off the tank. 10 gallons, it's fine. Running the engine doesn't affect the smell one way or another (except that it's mixed with exhaust), so it sounds like we might have different issues, but I'll report back whatever I find.

[Super Blue 72]

Sounds good!  Thanks!