1G Fuel Tank Capacity

[Calan]

Does anyone know what the actual fuel tank capacity is on a '92 Talon?

Not what the FSM says...what it actually holds. From bone dry to clicking off the nozzle at the gas pump.

 

[1gDSM4g63]

What's the FSM? Otherwise is 15.9 gallons.

 

[Calan]

FSM - Factory Service Manual.

I want to know if anyone has actually measured it. Since I can run mine empty to the red line and it takes 12-13 gallons to fill it up, I find it hard to believe that the lines and tank hold almost 16 gallons.

Unless I've always had a lot more driving I could have done once it's on "E".

 

[1gDSM4g63]

Factory service manual don't lie. Every modern car has a reserve tank so when you take it all the way till empty there is always some left. It fools with you so stupid people don't running till their tanks are dry.

 

[ilco187]

when my fuel light comes on, it usually takes 13-14.5 gallons in my car, sometimes i wonder.

and when i run it dry till the car wont start, there is about a gallon or so in the tank still, so its about 15 or so.

 

[Calan]

The general consensus so far (on another forum) is just shy of 14 gallons, from sputtering empty to full.

 

[1gDSM4g63]

when my fuel light comes on, it usually takes 13-14.5 gallons in my car, sometimes i wonder.

and when i run it dry till the car wont start, there is about a gallon or so in the tank still, so its about 15 or so.

If you'd actually seen or done a fuel pump assembly you'd know that the pump doesn't have the ability to suck it clean dry to the bone and maintain the fuel pressure the car runs on. So the empty signal comes on at 12-13 gallons giving you 2-3 gallons to work with.

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[donniekak]

I've driven mine until it dies going around a slow left hand turn, with the light having been on for a while, and it took a little over 13 gallons to have fuel overflowing out of the fill tube. If that thing holds 16 gallons, i'll drink a tank full. My buddy has a 1g awd gas tank in his garage, we will fill it up and see what it takes.

 

[Calan]

If you'd actually seen or done a fuel pump assembly you'd know that the pump doesn't have the ability to suck it clean dry to the bone and maintain the fuel pressure the car runs on. So the empty signal comes on at 12-13 gallons giving you 2-3 gallons to work with.

Ummm... if the pump can't reach the last 2-3 gallons (if I read your post right), then how exactly are you supposed to "work with" them?

My buddy has a 1g awd gas tank in his garage, we will fill it up and see what it takes.

Cool deal...now that's what I'm talkin' about.

 

[1gDSM4g63]

According to ilco187 when the light come on it takes about 13-14.5 gallons to fill the tank leaving us a little extra to play with meaning that when the light comes on your car doesn't instantly die. And when he runs it dry he noticed that it takes 15+ gallons to fill it up.

when my fuel light comes on, it usually takes 13-14.5 gallons in my car, sometimes i wonder.

and when i run it dry till the car wont start, there is about a gallon or so in the tank still, so its about 15 or so.

You do realize that the fuel pump is top mounted and where it sucks fuel in doesn't necessarily touch the bottom of the fuel tank right?

I highly doubt what the factory manual say is wrong. They couldn't have gotten away with it for 9+ years, but if someone proves differently I guess we could have our cars recalled if not sued for stating the wrong fact.

 

[Calan]

You do realize that the fuel pump is top mounted and where it sucks fuel in doesn't necessarily touch the bottom of the fuel tank right?

If you mean me...yeah. I've rebuilt, rewired, and replaced a couple of them.

I highly doubt what the factory manual say is wrong. They couldn't have gotten away with it for 9+ years, but it someone proves differently I guess we could have our cars recalled if not sued of the fact they state it wrong.

... well I'm not wanting to sue anyone. I'm just wanting a better estimate of what I have left in the tank at any given time for fuel mixture calculations, and I've found enough mistakes in the FSM to know that they aren't perfect.

 

[1gDSM4g63]

Well if the factory manual is wrong, why do you have to prove it wrong especially on the fuel tank capacity? You do know that running the tank all the way to empty consistently is not good for the car right?

You should never go below 1/4 tank because of condensation issue, rust, etc... In fact, all tank accumulate grit and chances are if you're running it all the way to empty you'll be sucking in the grit.

 

[Calan]

Well if the factory manual is wrong, why do you have to prove it wrong especially on the fuel tank capacity? You do know that running the tank all the way to empty consistently is not good for the car right?

I just answered that in my last post.

...I'm just wanting a better estimate of what I have left in the tank at any given time for fuel mixture calculations

 

[802Hoop]

I'd also like to know the exact capacity for champcar rule requirements... just in case I decide to convert to a fuel cell in the future.