Poor Gas Mileage.....Help Please - HondaCivicForum.com

Mechanical Problems & Technical Chat If you've got a problem you just can't figure out, a noise you can't diagnose, or a check engine light that won't go away, ask about it here!

Thread Tools Search this Thread
Old 02-12-2007, 07:49 PM
Thread Starter
Join Date: Feb 2007
Posts: 1
Default Poor Gas Mileage.....Help Please

I have a '04 LX Automatic w/ 25,000 miles. Over the last month my mileage has gotten a lot worse. I use to average around 31mpg's on the highway and 25 mpg's around town. Now I'm struggling to get 25mpg's and 19 mpg's respectfully. Tire pressure is good - Air filter is clean - the book says not to change much until 100,000 miles... I had a oil change 2 months ago. I have always used 87 octane fuel. At first I thought that the gas I was buying was bad so I went to other stations and still the same problem.....

Any ideas???

Reply With Quote
Old 02-12-2007, 08:30 PM
HCF Member
Join Date: Jun 2006
Location: sterling heights MI
Posts: 1,726
Default RE: Poor Gas Mileage.....Help Please

try some enging cleaners like Z-max or seafoam. have heard good about both. try and see if that works. just a little suggestion. might help might not.
Reply With Quote
Old 02-12-2007, 09:04 PM
Join Date: Nov 2004
Posts: 1,396
Default RE: Poor Gas Mileage.....Help Please

Cleaning you IACV might help.
Reply With Quote
Old 02-12-2007, 09:18 PM
Join Date: Aug 2006
Posts: 172
Default RE: Poor Gas Mileage.....Help Please

Its probably a combination of your driving habbits (more aggressive now car is getting older), and the winter fuel blends.
Reply With Quote
Old 02-13-2007, 08:13 AM
Join Date: Jan 2007
Posts: 16
Default RE: Poor Gas Mileage.....Help Please

How cold is the weather you're driving in? I find that I tend to get worse gas mileage in the winter versus the warmer months, particularly when it's ubercold like now (-20C or so).

I've always thought it's just the denser air causing more fuel to be burnt for the same air/fuel ratio, amongst other things, but I could be wrong.
Reply With Quote
Old 02-13-2007, 12:36 PM
HCF Member
Join Date: Dec 2006
Posts: 39
Default RE: Poor Gas Mileage.....Help Please

i think bolts might be right, because i've also been getting about 6mpg less than last month and the weather has become significantly colder. i recently did the seafoam treatment, got new wheels and tires with higher air pressure (same diameter though), replaced the spark plugs and had the same driving habits. instead of seeing my gas mileage increase it went down significantly. i'm hoping its just the colder weather.
Reply With Quote
Old 02-14-2007, 08:21 PM
HCF Member
Join Date: Apr 2006
Posts: 1,012
Default RE: Poor Gas Mileage.....Help Please

is the CEL on ??
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
97' civic ex oil burn and poor gas mileage moetmo_wet Mechanical Problems & Technical Chat 9 10-10-2011 09:22 AM
2004 Civic LX very poor gas mileage JamesO Mechanical Problems & Technical Chat 26 06-05-2008 09:38 AM
Black smoke on the bumper & poor gas mileage. Bad tune? bakertime ECU Tuning & Fuel Management 6 02-03-2008 07:03 AM
Poor gas mileage on '02 LX irotas Mechanical Problems & Technical Chat 14 01-29-2008 09:44 PM
Very Poor Gas Mileage on a 4th gen 1991 Civic DX benjaminboz Mechanical Problems & Technical Chat 3 01-30-2007 11:56 PM

2006, changed, civic, gas, honda, mileage, plugs, poor, spark

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors

All times are GMT -8. The time now is 10:57 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.