I am getting really bad gas mileage, i know this has been asked like a lot of times but search is taking a while for me. I am getting like 120 130 miles to a tank of gas any ideas what it could be i have 88 GXL and i did oil change and rad flush people where telling my o2 sensor is going bad or my fuel filter i need help its getting a little anoying any help would be good

 

how's your compression? New O2 sensor is only gonna get ya 1-2 mpg better...is it all city driving?

 

yup all city i dont know the compression the engine is only 4yrs old

 

car runs sound keeps idle i hope it dont have bad compression

 

what is normal compression Numbers for these cars

 

spark plugs and air filter may help. try those out.

 

yea my filter had leaves twigs and dirt i just dont have the money to buy another

 

Bump

 

you need a full tune up and then you can trouble shoot if something is really wrong with the car or not. you have alot of random variables up in the air.

 

everything has just about been done, but list somethings that should be replaced

 

anyone know of any sites where i can go to read about this stuff instead of forums so i can read up on it

 

anyone

 

last time i filled up i got 8.5 mpg that not good right or is that normal i dont think it is