Gas porblems

[916drifter]

I just replace my O2 sensor the other day and my gas is still going down way to fast. 250 miles for my whole tank. What can it be cuz its realy starting to piss me of.

[evotech240sx]

ive had that problem too bro. i know how it feels. well, since u did replace your 02 sensor and that didnt help out much. maybe it could just be your motor. how old is your motor does come into play. and also, do u high rev a lot??? do u noticed some fuel leaking too out of your exhast??? maybe you arent burning it. (but that shouldnt be the case) cause my old motor i had had about 210,000 miles on it and i had about the same gas milage on it as you. but got a newer/ younger ka24de and well, the car got a much better gas milage. and runs by far a whole lot better.

[916drifter]

I drive like a granny most of the time and i have 136,000 on the motor and just got new stock exhaust manifold, intake manifold, new water pump,, new altanator. I dont hi-rev a lot cuz i noe its hella bad for the motor. Can it be my timing? i have a striaght pip after the cat but theres a cut by in the pipe i have to weld shut cuz damn mieneki doesnt know how to weld flanges right. i dunno about fuel coming out . what do you mean by that.

[NISTECH]

check your airflow voltages( major fuel request sensor) is it within spec. check your injectors for possible leak down. coolant temp sensor input cauld also cause a higher fuel usage if it reads colder then it should.

[methodchris]

yea check the MAF sensor, had same problem in a different car and that was the prob

[daniel240]

advanced timing will burn more fuel than normal, but if you havent messed with it then its probably not that.