I currently only get 18 MPG on my Civic LX.

I have no idea what is wrong but I am considering changing the air filter, maybe even a short ram intake? I'll also change the spark plugs and check the tire pressure.

I only go to up 180 miles per tank which is horrible. Am I missing anything?

 

Change the fuel filter!!

 

Do you look at the gauge, or do you actually set the trip odometer to 0, drive around, fill up....and then take the miles driven and divide by the number of gallons you put in the car? Because Honda gas gauges are notorious for being shitty.

 

I actually write down the mileage at the pump and drive until it hits E, then I subtract the two following dividing over 11.

So..

Change fuel filter
Check tire pressue
Change spark plugs
Change air filter or intake?

 

just set the tripometer and top the tank off. Drive however many miles and then top it off again.

miles on tripometer / gallons used to top tank off = mpg

 

daym that is horrible gas mileage hope you fix it bro

 

Lead foot?

 

how may miles are on your car and when was the last time the O2 sensor was changed. that sounds right on par for having a bad O2

 

i get shitty mpg on my del sol but i think it could be that it doesnt have a catalyc converter or an o2 sensor.could tht be it???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by memphosfinest &raquo;</TD></TR><TR><TD CLASS="quote">i get shitty mpg on my del sol but i think it could be that it doesnt have a catalyc converter or an o2 sensor.could tht be it???</TD></TR></TABLE>With out an O2 sensor the car will run very rich. The best thing for you to do is put a cat and O2 sensor back in the car and see what happens

 

Yea, 02 sensor will do that and also you you should do a compression and leakdown test to see where your motor is at.

 

my gsr hatch gets 17-20 mpg

 

my stock SI hatch gets 280 before empty.

 

i used to get 280mpg, i put DSM 450's in my D series civic and it actually got better gas mileage once it was tuned, i get about 300 miles to the tank now. check your O2 sensor, are you throwing any CEL's?

 

whOooO....i get 180 to 200...i have a 94cx wit lsv.

when im at 200..im bone dry empty and the meter is still sayin 1/4 of gas left..maybe it the big *** dent that is in my gas tank..HAHA

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NegativeXero &raquo;</TD></TR><TR><TD CLASS="quote">i used to get 280mpg, i put DSM 450's in my D series civic and it actually got better gas mileage once it was tuned, i get about 300 miles to the tank now. check your O2 sensor, are you throwing any CEL's?</TD></TR></TABLE>

Really?

Op, you are probably just calculating it wrong.

 

lol in my VX i can drive ~200kms with the guage on empty...it also reads diffrently depending if im on an incline or brake/accelerate too hard

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sleepy_Red_hatch &raquo;</TD></TR><TR><TD CLASS="quote">lol in my VX i can drive ~200kms with the guage on empty...it also reads diffrently depending if im on an incline or brake/accelerate too hard </TD></TR></TABLE>

They always do since there is only one measurement taken from within your tank. I think it's from the rear pass side of the tank so if you turn right it will read lower.

 

OP: I don't think your calculations are accurate


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense &raquo;</TD></TR><TR><TD CLASS="quote">just set the tripometer and top the tank off. Drive however many miles and then top it off again.

miles on tripometer / gallons used to top tank off = mpg</TD></TR></TABLE>

do what he said ^^^

 

From the way you said you're measuring your MPG (just divide by 11) you're doing it worng, do what Bense said.

 

change all ur filters and dont get a short ram intake it will only make u waste more gas because ur letiing in more air

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatch96y7 &raquo;</TD></TR><TR><TD CLASS="quote">change all ur filters and dont get a short ram intake it will only make u waste more gas because ur letiing in more air</TD></TR></TABLE>

Which in turn will create more power, making it so you don't have to step on the gas as much.

If you want to get technical about it it doesn't really matter gas wise because they cancel each other out. You'd have to step on the gas that much more to aquire the same thing - but with the added air flow you won't need to open the butterfly as much - though the same ammount will be in there to achieve the same speed.

if you seriously think about it your claim makes no sense.

 

a good tune up

 

ehh....i get only like 370 kph in my b20vtec.... so yeah. not so good either. like 25ish or so, 24ish, depends on how much i let vtec rip. i guess its not too bad though.

 

damn , i can get 400+ on a tank in my 92 civic dx.