gas smell in 73tii

[Guest Anonymous]

When I fill up the gas tank, the passenger compartment gets this strong gas smell for the first quarter of the tank. It goes away, but the trunk still has the smell of gas. I tightened down the nuts holding the fuel pickup, the sending unit is secure, and all hoses are clamped tight. No obvious pinholes in the tank, which looks good, except for rust where the fill spout enters the tank.

Any thoughts?

TIA

Joshua

[Guest Anonymous]

paint. 71 02

[tiich]

i have exactly the same problem.  wondering if there is still some emissions stuff that needs removing.  what's the plastic breather thing tied to the parcel shelf inside the trunk?

[Stevenc22]

The gas fumes travel in a plastic tube to the plastic box under the parcel shelf and then off to engine bay through another plastic tube, where they are filtered and burned. Make sure that plastic line is attached to the filler neck and in good shape.

[tiich]

7 minutes ago, Stevenc22 said:

The gas fumes travel in a plastic tube to the plastic box under the parcel shelf and then off to engine bay through another plastic tube, where they are filtered and burned. Make sure that plastic line is attached to the filler neck and in good shape.

can i just block that off inside the trunk?  the line is open in the engine compartment.  

[Son of Marty]

1 hour ago, tiich said:

can i just block that off inside the trunk?  the line is open in the engine compartment.  

You;ll need to provide some sort of vent to apmosphere to replace the fuel used, euro cars have a vent for this through the trunk floor. Search gas tank venting for past posts on this.

[bergie33]

2 hours ago, tiich said:

can i just block that off inside the trunk?  the line is open in the engine compartment.  

That line should be connected to the air filter canister. 

[JohnS]

30 minutes ago, bergie33 said:

That line should be connected to the air filter canister. 

+1 on that.  At least on the '73 and '74 US models.  Probably only on '73 and later US tiis.  I have a different tii air box that is missing that little pipe for connecting the fuel vapor hose.  I assume it must be either an early tii air box, or a euro one. 

 

Edited June 13, 2023 by JohnS

[tiich]

25 minutes ago, bergie33 said:

That line should be connected to the air filter canister. 

i know.  maybe i'll just do that.  but it seems like a lot of brittle hoses and bits that can crack when i could just put a short hose through the floor instead.  i'll also check the sender seal....

 

the gas smell is in the trunk not the engine compartment.

Edited June 13, 2023 by tiich

[JohnS]

Check the gasket around the fuel sender and also the clamps on the rubber boot between the gas tank and where you fill er up.  The rubber boot can become brittle and leak.  Leaking around fuel sender is common and easily fixed with the proper new rubber gasket .

Edited June 13, 2023 by JohnS

[Son of Marty]

Another point of seeping gas is around the seam where the 2 halfs are joined although I would think you'd have the smell for more like the half tank level.

[SydneyTii]

Check the plastic filler tube which you put the petrol pump nozzle in, they do crack sometimes.