Civic bad fuel economy..

[Kienn.]

Hey guys ! I've purchased a civic fd1 earlier this year and i've recently noticed that my fuel economy has declined dramatically over the past couple of weeks. Im averaging about 350km's in a single tank, i occasionally vtec here and there but that shouldnt explain the high fuel consumption. Could it be the oxygen sensor that need replacing ??? Any help would be greatly appreciated

[black8thgen]

o2 sensor is common fix. also check ur air filter in the intake box.. if thats dirty and clogged up ur fuel consumption gets raped

[SHOGUNOVDDRK]

Different fuel going in?

Due for a service even?

[xenonkuraz]

no vtec'ing

[Kienn.]

Filled up with 98 when i first got the car, but didnt find it necessary to use premium fuel in an average family car. I've stuck with 91 since than and got roughly 500-550kms (average).
Theres still about 3000kms before my next service.. Is it possible to DIY the oxygen sensor?? as i know Honda charge a shitload $$$ for their services

[trism]

No reason not to use 98 in a family car.

Even though its more expensive, you generally get more kms per litre, because its a cleaner, better burning fuel.

As the for economy, common things to look at are oxygen sensor, air filter, and oil.

[xenonkuraz]

O2 sensor is easily replaced. Simply unscrew and disconnect

[threesix]

Pump your tyres up? Lol

[shepparton]

yeea check tyre pressure, tunee up your car, avoid giving your mate a lift ( this can be categoriseed as unneccessary carring heavy load which mean extra fuel needed)

[fitme]

im having a highrev when using a 91ron..

[SlobberGoat]

Fitting an exhaust system with too large a diameter will also half your mileage.

[lolmclol]

Lies, a larger exhaust not only increases torque, horsepower, and fuel economy, but also makes you look like a mad dawg when your cruisin' through the 'burbs in your race car yo!