I just bought a 240 about a week ago and since then i have put about 70dollars worth of gas in. That is about 85 litres. I have driven about 480km. The gas i have been using is the premium 91 octane. My question is, are 240's known for using that much gas? i can literally watch the gas meter go down when i'm driving on the highway. About a half hour goin 100kmph and the gas meter goes down 1/8. Do i maybe just need a tune up?

 

i would say tune up time. i dirve 70 miles a day at 65-75 mph, and i only use a tank of gas a week.(5days) check your air filter change you oil, injector cleaner, and maybe your fuel filter

 

If I did my math right, you're getting 13.3 miles per gallon in US measure.

On the highway at 70mph (112Km/h) my '96 gets approximately 30 mpg. (12.8Km/Litre)

You should do a full tune-up. Change your thermostat, distributor cap and rotor, plugs, plug wires, and oxygen sensor. Also change all of your fluids since you just bought it. Engine oil, coolant, transmission fluid, differential fluid.

 

well.. i just checked my plugs, wires, distributor cap, rotor, air filter, and fuel filter, and they are all brand new :S So i guess it has already had a full tune up. I did notice however that a have a hole in my intake after the air flow sensor. Could that be the cause of the crazy gas guzzling?

 

how about a hole in the tank? that is alot of gas!

 

Yes. Patch that hole or replace the intake with an aftermarket one.

 

does it make good power? Is it at all sluggish?

 

A maintenance is a definitly. If I had a car that ate my gas up like that, I'd probaly be in dept Get everything flushed out too, and while you're at it get your tires check too Who knows, you might save some more gas.

 

i have never heard of that... that is sickening i dont even know what to say about that i just wanted to comment on how grossly large that amount of gas your are losing

 

Sorry guys but i am really confused....What did i mess?

 

it could be your O2 sensor, that would give you bad mileage.

 

wow... 13 mpg.... I get like 26-28.... 13 is crazy low.

 

It's pulling in unmetered air, and that is the problem. When it does that your ECU will make your car run pig rich. Fix that

 

a whole will in the intake will never cut the m.p.g. in half.

if theres a whole in the intake before the MAF, your car will never run richer. the maf will read that its not gettin enough air, thus making the ecu cut down on the fuel to allow more oxygen in the air to balance the a / f ratio.

but i cant really give a solution to your problem.
is your car bone stock?
is the check engine light on?

 

Yes but at the same time all that unmetered air is causing a lean condition which is detected by the oxygen sensor. The computer increases the injector pulse length, causing extra fuel consumption.