85 GT, Bad Gas Mileage

Dean85GT

New Member

Nov 27, 2004

502

1

0

Thorold, Ontario, Canada

Nov 27, 2004

#1

• Nov 27, 2004

• #1

I just tuned my car up with new ford racing 9mm wires, new plugs, new distributer cap and rotor, pcv valve and i have a fuel filter that I still have to put in. Right now my car is running great except the oil leak from the pan. I am only getting 11.8 mpg though. What is going on here?

I forgot to mention that the car also has a new K&N filter, is a 5 speed, and recently passed emissions with flying colors.

 

D

dude5l

Founding Member

Dec 24, 2001

201

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0

Grande Prairie, Alberta , Canada

Nov 27, 2004

#2

• Nov 27, 2004

• #2

I don't think that is too bad for a carburated Mustang if its all city driving. What does it get on the highway?

 

Dean85GT

New Member

Nov 27, 2004

502

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Thorold, Ontario, Canada

Nov 27, 2004

#3

• Nov 27, 2004

• #3

I've only had the car for a month and it isnt a daily driver, so I dont have any highway mileage to post. The odd thing is I put $20(Canadian) of gas in and get 3/4 a tank. This is aout 6.5 gallons. Within 120km (77miles) it is gone.

 

maverick0716

Founding Member

Jan 12, 2002

3,924

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56

Chilliwack, BC, Canada

Nov 27, 2004

#4

• Nov 27, 2004

• #4

If it's 3/4 on the guage, it's not actually 3/4 in the tank. Mine goes WAY past the full mark until you can't even see it. But yeah, carbureted cars don't get the greatest mileage.....mine sucks too. If I do all city driving I usually get around 220-240 km to a tank.

 

TITAN STANG

New Member

Apr 15, 2004

74

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0

Nov 27, 2004

#5

• Nov 27, 2004

• #5

taking on that subject. I got an EFI 87 and get 170 miles to the tank unitl it reaches the last 1/4. I do some pretty granny driving. 2 miles down the road and same back 5 days a week. The remaining 2 days go maybe total of 40 miles at about higway speed 50-75. For an average of 60 miles a week total. I am dumbfounded as to why so much gas.

 

8

87'GTstang

New Member

Feb 16, 2004

1,025

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0

Nov 27, 2004

#6

• Nov 27, 2004

• #6

TITAN STANG said:

taking on that subject. I got an EFI 87 and get 170 miles to the tank unitl it reaches the last 1/4. I do some pretty granny driving. 2 miles down the road and same back 5 days a week. The remaining 2 days go maybe total of 40 miles at about higway speed 50-75. For an average of 60 miles a week total. I am dumbfounded as to why so much gas.

Click to expand...

Easy, if all you do is go 2 miles down the road, then your car is in open loop all the time. Considering you never get to closed loop or even get the engine anywhere near warmed up, you gas goes straight out the tailpipes

 

At1Maverick69

Member

Aug 21, 2004

220

0

16

San Leandro, Cali

Nov 27, 2004

#7

• Nov 27, 2004

• #7

well I get the same thing too, but! I have a crapped out AOD, my gas milage is crap, I get about I think 120 a tank and gas is like $2.40 for regular I dont even use that- I go for 89 octane... just thought i'd share

 

joelliott

New Member

May 17, 2004

210

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0

Gainesville, FL

Nov 27, 2004

#8

• Nov 27, 2004

• #8

I have a 85gt carbed too. I get about 21 on the HW and 16-17 city. I also get about 250 miles to the tank and thats leaving about 2 gal.s in I dont run it to the bottom. You should be getting well over 11mpg. Is your idle gettin stuck or something? What are your rpms around during normal driving? Good Luck.
Joe E.

 

wyominghotwheel

New Member

Jul 23, 2003

156

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Insanemustangs

Nov 27, 2004

#9

• Nov 27, 2004

• #9

try keeping your foot out of the gas and put it in neutral when you are going down hill..........all kinding aside, that is pretty good, my twinturbo'd car only get's about 6mpg..........hotwheels of turborides