150 miles and my gas is gone

stang8urimport

Autozone Junkie

Founding Member

Jun 21, 2002

1,499

12

59

Daytona Beach, FL

Jul 24, 2005

#21

• Jul 24, 2005

• #21

Then you didn't almost run her out of gas. LOL. I've put MORE then 15.4 gallons in my 83 before... It must have been running off of the gas left in the carb, and the fuel in the lines. haha

 

Nutzy19

Member

Mar 30, 2005

120

0

16

Flemington NJ

Jul 24, 2005

#22

• Jul 24, 2005

• #22

86T-Top said:

So did these foxes have different size gas tanks? My manual says I have a 15.xx gallon tank, but I have never stuffed more than 13.xx gallons in the car, even when I almost ran her out of gas.

Mario

Click to expand...

Thank you.... with baffling and pump assembly its no more than 13.8....
never argue with the parts guy..plus I filled a brand new COMPLETEY EMPTY tank at the station and TO THE FILLER NECK it only took 13.8 Gallons and gas pumps are the most accurate so dont go there either...

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Jul 24, 2005

#23

• Jul 24, 2005

• #23

So the owners manual is wrong? (I am not being a smarty - we know dipsticks are off too).

 

J

JB66

New Member

Aug 21, 2004

565

1

0

New York

Jul 24, 2005

#24

• Jul 24, 2005

• #24

There's a lot more space above the level of the filler neck entrance into the tank. I've put 15.7 in mine after I ran out on the highway.

 

stang8urimport

Autozone Junkie

Founding Member

Jun 21, 2002

1,499

12

59

Daytona Beach, FL

Jul 24, 2005

#25

• Jul 24, 2005

• #25

 

M

Mysterio

New Member

Oct 6, 2004

101

0

0

Lakewood, Ohio

Jul 24, 2005

#26

• Jul 24, 2005

• #26

I fill my tank and have put 240+ gallons on it to one tank, and my car is a n/a carbureted 302. That's 16-ish MPG.

 

86T-Top

Founding Member

Jun 29, 2001

553

0

17

Dublin, PA

Jul 24, 2005

#27

• Jul 24, 2005

• #27

Nutzy19 said:

Then you didn't almost run her out of gas. LOL. I've put MORE then 15.4 gallons in my 83 before... It must have been running off of the gas left in the carb, and the fuel in the lines. haha

Click to expand...

I didn't want to admit it, but when I said I almost ran out of gas, I meant when I ran out of gas and had to walk to the gas station to get a gallon to fill her up. Anyway, I put a gallon in her on the side of the road and then I could only stuff in 12.xx more gallons. I have always wounder why my manual says one thing, but the fuel pump tells me I can only put in 13.xx gallons.

Maybe your 83 has a larger gas tank, because the carbed stangs get worse gas mileage. Or did the 4 cyl have a smaller gas tank, b/c of their small engines and better fuel mileage? If so maybe the previous owner swapped out my tank with a 4 cyl one. All I know is that I wish I could stuff a few more gallons in her so I don't have to be at the gas station 3 times a week.

BTW - I get anywhere from 12-15 mpg in the stop and go, and as bad as 10 in center city Philadelphia. But on the highway I have gotten 23MPG.

Mario

 

Nutzy19

Member

Mar 30, 2005

120

0

16

Flemington NJ

Jul 24, 2005

#28

• Jul 24, 2005

• #28

Spectras catalog for 2005 says Capacity : 13.9 Gallons

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

6

79

Charlotte, NC

Jul 24, 2005

#29

• Jul 24, 2005

• #29

"have put 240+ gallons on it to one tank"

Wow - that's either a really big tank, or you have one helluva leak...

 

M

Mysterio

New Member

Oct 6, 2004

101

0

0

Lakewood, Ohio

Jul 24, 2005

#30

• Jul 24, 2005

• #30

Michael Yount said:

"have put 240+ gallons on it to one tank"

Wow - that's either a really big tank, or you have one helluva leak...

Click to expand...

240 + ON IT.. meaning 240+ miles ON IT to one tank of gas. not 240 gallons in one tank.

 

Euphoric306

New Member

Apr 5, 2004

905

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0

Jul 25, 2005

#31

• Jul 25, 2005

• #31

all mustangs from 1979-2004(models, years, nationalities) had the exact same gas tank, i checked part numbers with ford multiple times.

i dunno why you all can only put 13.x gallons in but ive filled up with close to 15 gallons many times, and i know the stock fuel pump wont drain the tank completely.

p.s. - its not good to run ur tank below like, 1/4 tank... the pump uses the fuel for cooling, and the less gas there is in a tank, the more oxygen there is, and more fuel for a possible explosion (worst case scenario)

 

J

jimilane

Founding Member

Aug 20, 2001

158

0

17

Raleigh, N.C.

Jul 25, 2005

#32

• Jul 25, 2005

• #32

Maybe your speedometer is off a little bit.

I always check my gas mileage with a GPS. I don't trust the speedometers for testing gas mileage.

Every car I have is off, even with no mods. I have correction cars in them all.

I once threw off the speedometer by 6 mph by pumping my tires up to 100psi, when I had my speedometer checked for court. I'm not telling why I needed to throw my speedometer off though. But, improper equipment citations are better than a speeding tickets in N.C>.

Jim

 

LXSTASY

Founding Member

Apr 25, 2000

932

0

0

Long Island, NY

Jul 25, 2005

#33

• Jul 25, 2005

• #33

15.4 gallons.
Read the manual

 

67coupe

Founding Member

Apr 5, 2002

658

402

93

Huntsville, AL

Jul 25, 2005

#34

• Jul 25, 2005

• #34

To the original poster and anyone having fuel comsumption problems:

If you are experiencing poor milage and have done the typical tune up with no improvements...do I have the product for you....J/K

Check your grounds. Particularly the injector harness ground on the back of the drivers side head. Also, check the ground strap from the firewall to that same head. I was fighting decreasing gas milage for over 1 year. Tried everything, sensors, plugs wires. During my head swap I was removing the injector harness and saw how dirty and corroded the connections were. Cleaned them and am getting the same milage I was when the car was bone stock. Just got 26 mpg this last weekend.

Try it. It's a free way to eliminate a potential source of your problem.

 

1991vert

10 Year Member

Feb 27, 2004

1,103

7

69

Ludlow, MA

Jul 25, 2005

#35

• Jul 25, 2005

• #35

ya i saw the strap from the firewall just dangling when i swapped my stock h-pipe back on last night. i thought it was just rope incase some freak accident happened where my engine dropped into the road

 

Euphoric306

New Member

Apr 5, 2004

905

0

0

Jul 26, 2005

#36

• Jul 26, 2005

• #36

jimilane said:

Maybe your speedometer is off a little bit.

I always check my gas mileage with a GPS. I don't trust the speedometers for testing gas mileage.

Every car I have is off, even with no mods. I have correction cars in them all.

I once threw off the speedometer by 6 mph by pumping my tires up to 100psi, when I had my speedometer checked for court. I'm not telling why I needed to throw my speedometer off though. But, improper equipment citations are better than a speeding tickets in N.C>.

Jim

Click to expand...

uh.... just a ?... howd u know it was 6mph off? i dunno much about gps systems, they can probably tell u speed tho so, yea

another thing... i dunno what kinda tires ur running or if there are that can withstand 100psi of pressure, but wtf... id be scared *****less to pump up a tire that much, they can and do explode.

a guy who works at a pizza place i used to work at was killed when one of his tires exploded when he was filling it up... not too sure on the details tho.

 

M

Mysterio

New Member

Oct 6, 2004

101

0

0

Lakewood, Ohio

Jul 26, 2005

#37

• Jul 26, 2005

• #37

I just filled my tank last night. I had about an 1/8th tank remaining and I put exactly 9.8 gallons into it.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Jul 26, 2005

#38

• Jul 26, 2005

• #38

trying to interpolate (or extrapolate) anything from the stock gas gauge is a walk on the wildside if you ask me.

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

6

79

Charlotte, NC

Jul 26, 2005

#39

• Jul 26, 2005

• #39

".... a walk on the wildside..."

....and the colored girls go do, do-do, do-do, do-do-do- do, do- do, do-do.....

 

8

89white50

Member

Nov 16, 2004

440

1

18

central MA

Jul 26, 2005

#40

• Jul 26, 2005

• #40

gas tank is 15.4 gallons like was said before. if im on the highway alot i easily hit 26 mpg with the 273's, but a lot less around town cuz i like to have a little fun...ok A LOT of fun . but got the 355's now...stupid gas prices...