Avanti Gas feed and possible tank removal

[aardvark]

Hi folks. I started the questions on the Red Hawk posting. I thought this would be a more direct place to post the issues I'm having.

So my 73 Avanti is having fuel feed issues. I've blown out the line and syphon pumped it out as well to the tank off of the fuel pump line. It'll run, but lethargic. Runs great off of a 5 gal gas can. I've seen virtually no crud showing up in an installed clear filter.

So the main question for the day is where is the gas feed line attached to the tank and how do I access it? From under the car? Is there also a drain petcock or other drainage method?

..........

 

[ronmanfredi]

If it's the same as my 82 had, the fuel lines run from the engine fuel pump on the passenger side of the engine back to just in front of the right rear tire and then go up through the floor to the gas tank.  You will need to remove the back seat, the back fiber glass panel behind the seat, to access the fuel tank and lines.  Once there, you can disconnect the rubber hoses from the tank (first) and the chassis metal lines (second), since they will both need replacing.  Next set up a container to catch the fuel.  Attach the old supply hose back to the tank so the fuel will go to your container.  (gravity fed).  There wasn't a drain plug on my 82.  Now is the time to replace all the fuel hoses including the filler neck hose, fuel pump hoses, etc.  You'll need to go get some dum-dum when reinstalling the back panel to seal it off correctly.  You don't want to use anything that will harden like silicon etc. since the panel may need to be removed in the future. The tank can be removed at this time also if needed.  

[aardvark]

Good info Ron.

I'm going to syphon out the tank as best possible and remove the tank. All your points are well accepted and I agree.

It still doesn't answer the question of where is the fuel line attached to the tank. My understanding is there is an elbow fitting below the tank connected to s rubber hose. The rubber can be crimped off to stop fuel flow onto the ground.... but where do I access that fitting and hose?

Under the car???

[ronmanfredi]

7 hours ago, aardvark said:

Good info Ron.

I'm going to syphon out the tank as best possible and remove the tank. All your points are well accepted and I agree.

It still doesn't answer the question of where is the fuel line attached to the tank. My understanding is there is an elbow fitting below the tank connected to s rubber hose. The rubber can be crimped off to stop fuel flow onto the ground.... but where do I access that fitting and hose?

Under the car???

On my 63, the fuel line comes out at the bottom of the tank thru the floor above the axle and goes to the fuel line that runs on the driver's side of the car up to the Studebaker fuel pump.  On my 82 with the chevy engine, the fuel line comes from the top of the tank, drops down in front of the tank and through the floor right in front of the right rear tire.  It then goes to the chevy pump on the passenger side of the car.  Since that line ends up being lower than the fuel tank, it's gravity fed.

[mfg]

1 hour ago, ronmanfredi said:

On my 63, the fuel line comes out at the bottom of the tank thru the floor above the axle and goes to the fuel line that runs on the driver's side of the car up to the Studebaker fuel pump.  On my 82 with the chevy engine, the fuel line comes from the top of the tank, drops down in front of the tank and through the floor right in front of the right rear tire.  It then goes to the chevy pump on the passenger side of the car.  Since that line ends up being lower than the fuel tank, it's gravity fed.

That’s odd… on my ‘83 (RQB3655), the fuel outlet is bottom dead center of the fuel tank… exactly like earlier Avantis .., There is also a factory drain plug in the fuel line located approximately under center of passenger door.

[aardvark]

Thanks Guys. At least now I know what to look for.

I have a feeling the clog is in the feed line and the  tanks not an issue, Got some checking to do..