gas mileage

K

kiNe5

New Member

Oct 26, 2004

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Nov 16, 2004

#1

• Nov 16, 2004

• #1

my 302 seems to get horrible gas mileage. i know theyre v8s but this is bad. Also my cars runs out of gas at a little less then a quarter of a tank or at least loses a lot of power and misses in first and second gear. Im using 93 octane always, its the best i can find where i live. (when i take the gas cap off it sounds like a lot of air pressure is released, is this normal) any ideas?
thanks!

 

W

wytstang

Mustang Master

Mar 14, 2004

4,988

4

78

Summerville,SC missing South Fl. weather :(

Nov 16, 2004

#2

• Nov 16, 2004

• #2

How are the spark plugs? Change your fuel filter? When it misses is it under a load? who are the wires?

 

K

kiNe5

New Member

Oct 26, 2004

18

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0

Nov 16, 2004

#3

• Nov 16, 2004

• #3

sprak plugs

just got new bosch spark plugs but probably need new fuel filter though, whats best brand for filter? wires are only 8mm not sure of brand, came with car, they seems allright though.

 

W

wytstang

Mustang Master

Mar 14, 2004

4,988

4

78

Summerville,SC missing South Fl. weather :(

Nov 16, 2004

#4

• Nov 16, 2004

• #4

Fuel filters ford or what ever you can get at your local parts store. At night lift the hood and see if the spark plug wire are arcing(light show) it has to be really dark. You say your car misses is it under a load(heavy acceleration)? Or just when you low on fuel?

 

DFG 5OH

Active Member

Aug 28, 2004

1,341

0

36

Louisville, KY

Nov 16, 2004

#5

• Nov 16, 2004

• #5

My car gets a lot better gas milage now that i can drive it. Clean your MAF.

 

Car Nut

Founding Member

Jul 6, 2000

1,176

1

37

Snellville, Georgia (Atlanta area)

Nov 16, 2004

#6

• Nov 16, 2004

• #6

Unless you've advanced your timing, start using 87 octane gas. No need for 93.

Bosch spark plugs? What kind. I used to use the platinum or whatever special ones they had, but found more success with the plain ones.

Bad O2 sensors? May need them replaced. If you've got plenty of miles, consider getting the fuel injectors cleaned (not the fuel additive) and possibly clean the MAF.

Good luck.

 

HISSIN50

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

15 Year Member

Nov 29, 1999

31,179

34

129

Nov 16, 2004

#7

• Nov 16, 2004

• #7

kiNe5 said:

my 302 seems to get horrible gas mileage. i know theyre v8s but this is bad. Also my cars runs out of gas at a little less then a quarter of a tank or at least loses a lot of power and misses in first and second gear. Im using 93 octane always, its the best i can find where i live. (when i take the gas cap off it sounds like a lot of air pressure is released, is this normal) any ideas?
thanks!

Click to expand...

what i would do: pull codes.
what milage do you actually get? dont run out of gas - it kills pumps. some cars have a lot of vac in the tank (hissin when cap is removed). check the cannister and its purge valve and lines for faults. good luck.

 

K

kiNe5

New Member

Oct 26, 2004

18

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0

Nov 16, 2004

#8

• Nov 16, 2004

• #8

no not under head load, only normal 1st gear starts. It does better once its warmed up. I also have an ald batter and horrible terminals, about to replace cables the whole way. MAF been cleaned recently. Yes bosch platinum, changed about 3 weeks ago. Getting the codes pulled as soon as i fix a connection. Ill get back to yall, THANKS (car needs lot of work as we can all see, recently purchsed, 96000 miles on it.)