bad milage
Thread Starter
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Freshman User
Joined: May 2007
Posts: 37
Likes: 0
From: Grand Valley, On
bad milage
i just got my G2 and am finally able to drive my truck.
its a 90 f150 w/ a 5L.
it seems like its getting horable milage, i figured it out to be about 12.7mil/gal but im not sure if my maths right, i drove it to schol today and took the long way home but still, i dont think it should have used half a tank like it did.
im hoping that mabee the top half of the tank is smaller or a little more sensitive or somthing, when i bought the truck the guy said the gauge didnt work and it gets about 400k to a tank, but this doesnt seem right cause after 270k i ended up putting in anout 58L/60$
how big is this tank, its a single tank on the drivers side behind the axle, im guessin about 70L
is this truck really that bad on gas or is the tank bigger than i think and the gauge playin tricks on me, cause if i have to fill it every 2-3 trips to shelburn im not makin alot of money cause i work arounf the corner from the school.
thanks for any help
its a 90 f150 w/ a 5L.
it seems like its getting horable milage, i figured it out to be about 12.7mil/gal but im not sure if my maths right, i drove it to schol today and took the long way home but still, i dont think it should have used half a tank like it did.
im hoping that mabee the top half of the tank is smaller or a little more sensitive or somthing, when i bought the truck the guy said the gauge didnt work and it gets about 400k to a tank, but this doesnt seem right cause after 270k i ended up putting in anout 58L/60$
how big is this tank, its a single tank on the drivers side behind the axle, im guessin about 70L
is this truck really that bad on gas or is the tank bigger than i think and the gauge playin tricks on me, cause if i have to fill it every 2-3 trips to shelburn im not makin alot of money cause i work arounf the corner from the school.
thanks for any help
Posting Guru
Joined: May 2007
Posts: 1,208
Likes: 2
From: North Reading Mass
My 1983 F150 SB 5.0 with AOD and 3.55 gears got about 16-18 on the highway driving at 65-70 mph. Best ever was 20 mpg at 55 mph. Worst was 10.5 hauling 5000lb trailer. Commuter mileage was about 14 mpg. When I measure fuel mileage I always use the same pump and fill it. Fuel capacity was only 17 gal. Truck wieghed about 4000lb
YMMV
rikard
YMMV
rikard
Thread Starter
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Freshman User
Joined: May 2007
Posts: 37
Likes: 0
From: Grand Valley, On
ok, so mabee im not doin to bad, ill run a few more tank through it and see what it avrages out too i guess.
im only on the second tank full now, since ive got it.
and flowing exaust help or worsen mlage, i want to do it for the sound anyways, but dont have alot of money, and if its going to make it worse then theres no way im gunna do it now. ive heard it helps but not sure.
im only on the second tank full now, since ive got it.
and flowing exaust help or worsen mlage, i want to do it for the sound anyways, but dont have alot of money, and if its going to make it worse then theres no way im gunna do it now. ive heard it helps but not sure.
Junior User
Joined: Feb 2007
Posts: 85
Likes: 1
From: Eastern Washington
How are you calculating your gas mileage? It sounds like you are going off of distance and published tank capacity. A more accurate way to do this is to fill your tank up, reset your trip odometer, and drive until almost empty. When you fill up again, take the actual gallons (or liters) from the pump, and note your trip odometer. Divide your mileage (or kilometers) actually driven by the number of gallons/liters you actually used. Here are some conversions for you:
1 mile = 1.609 Km
1 Km = 0.6213 miles
1 gallon = 3.785 liters
1 liter = 0.264 gallons.
Hope this helps,
Steve
1 mile = 1.609 Km
1 Km = 0.6213 miles
1 gallon = 3.785 liters
1 liter = 0.264 gallons.
Hope this helps,
Steve
Elder User
Joined: Feb 2007
Posts: 829
Likes: 1
From: Goose Creek SC
A more free flowing exhaust will sound better and help some on mpg......also make sure it is tuned up good....plugs(motorcraft are highly recommended), wires, dist. cap, rotor, PCV and filters. Air flow into it will also help it breathe and get better mpg.......many use a K&N air filter....but many others say just having a good clean stock air filter is good also (and less costly)
Make sure you are re-filling to the same place in the tank to check and calculate mpg. Some tanks are harder to fill than others......you'll learn your trucks little quirks as you drive it more. I let mine turn itself off.......then restart it very slow till it turns itself off 2 more times, then use that gallon figure into my miles driven. I have been getting between 16 and 17.
Finally.....keep your foot off of the floor......that helps a bunch........
Welcome to FTE, Good Luck and enjoy your truck.
Make sure you are re-filling to the same place in the tank to check and calculate mpg. Some tanks are harder to fill than others......you'll learn your trucks little quirks as you drive it more. I let mine turn itself off.......then restart it very slow till it turns itself off 2 more times, then use that gallon figure into my miles driven. I have been getting between 16 and 17.
Finally.....keep your foot off of the floor......that helps a bunch........
Welcome to FTE, Good Luck and enjoy your truck.
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Posting Guru
Joined: May 2007
Posts: 1,208
Likes: 2
From: North Reading Mass
I ran a 3" single exhaust from the cat, exiting in front of the rear passenger wheel with a Walker turbo exhaust muffler. The outlet was about halfway from the cab to the wheel and it stuck out about as far as the running board. It got a little better mileage and much better performance than the stock system and it actually cost less. My state would only allow this configuration on a truck without a cap. Never had an issue with fumes. Sounded great too.
Good luck
rikard
Good luck
rikard
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Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
My FPS is causeing my problems with my fuel mileage.
But there is a really big list of things to check for bad mileage.
Checking your codes first is the best thing.
To big of exhaust on a gasser is not always a good thing, you need a little backpressure.
But there is a really big list of things to check for bad mileage.
Checking your codes first is the best thing.
To big of exhaust on a gasser is not always a good thing, you need a little backpressure.