Changed My Fuel Tank and All of a Sudden...

[bracketchev1221]

What do you meaning collapsing? The hose could be compressing together, in other words?

Yes and closing itself off. I am not positive since I haven’t bought fuel line in a while, but most cars today are pressurized fuel systems with the pump in the tank. So the line may be high burst pressure but collapse easily under vacuum.

 

[Emhendo]

Well, one is a Chevrolet and the other is Oldsmobile; how can you forget?

Simple. I forget which is which.

Who cares.

 

[Emhendo]

Yes and closing itself off. I am not positive since I haven’t bought fuel line in a while, but most cars today are pressurized fuel systems with the pump in the tank. So the line may be high burst pressure but collapse easily under vacuum.

So the old man at Adavanced Autos sold me a low pressure house because it's a carberator.

I see the flow of the line is also not very high pressure, when it was once leaking.

Maybe I need a high pressure hose?

I haven't seen if it's collapsing yet.

When it was leaking, the hose would STOP LEAKING when I hit the gas.

Two people have told me the leak stops when I hit the gas.

What could that mean? High pressure when I hit the gas?


I have since fixed the leak with new hoses and lines.

 

[pontiacgp]

Since the problem started when you changed the tank I would drop the tank and remove the sender to make sure the O ring is good, inspect the pick up to make sure it is in good shape and the sock is till there

 

[Emhendo]

Since the problem started when you changed the tank I would drop the tank and remove the sender to make sure the O ring is good, inspect the pick up to make sure it is in good shape and the sock is till there

Yep brand new sending unit and tank. I will look into this. I believe I locked it down pretty good and the O-ring and lock ring were brand new....

 

[TURNA]

If you smell gas as you are driving I would think the fumes are in front of you, not behind you.

Unless you are driving in reverse

 

[5spdCab]

If you smell gas as you are driving I would think the fumes are in front of you, not behind you.

Unless you are driving in reverse

I thought that too, until just a couple of weeks ago on my way home from work. I had the pressure fitting on my electric fuel pump pop out and squirting gasoline all over the freeway. The pump is mounted to the frame rail near the rear axle, I could smell gas and assumed it was someone ahead of me. Much to my surprise, I soon was running out of gas in the carburetor. From the left lane in excess of 70mph to the right shoulder in about 400ft. I am so glad that there was almost no traffic because of the covid lockdown.

 

[Bitterman]

Have you checked fuel pressure since I stalling the new tank. Are you using a pressure regulator and is the return fuel line functioning correctly?

 

[fleming442]

Have you checked fuel pressure since I stalling the new tank. Are you using a pressure regulator and is the return fuel line functioning correctly?

Good point: are the lines going to the right ports on the sending unit?

My most recent battle with gas fumes was the sender o-ring.

 

[jiho]

When it was leaking, the hose would STOP LEAKING when I hit the gas.

Two people have told me the leak stops when I hit the gas.

What could that mean? High pressure when I hit the gas?

If I'm not mistaken, that 1/4" line is a return line from the pump to the tank. Anyway, it would be if you have a 3 line system. If you have a 2 line system it could only be a vapor line, which shouldn't have any gas in it at all.

The leak stopped when you hit the gas because more gas was going to the motor, while less was returning to the tank.

But the return line doesn't have any real pressure, because it empties into the tank through an open tube.