everything seem good and drive fine,but it only gets 200 mile a tank,92 dx spd with intake and apexi muffler.what's up with that

 

my 00 ek also full tank 188-190 miles 5 speed swapped d16y8?

 

o2 sensor maybe?

 

Any CELs?

How do you drive?

 

does fuel filter have to do with it? mine around the same 200-250. 93 del sol with y8.

 

i hear people getting 300-350 a tank,that is unbelieveable

 

i have a 99 ek with a y8 and i was getting about 300-320 depending on how i drove it. it also had 230,000 miles on it. it was boosted at one time and it was sprayed from time to time and took it like a champ.

i just swapped a b20 w/ a b16 trans and the highway driving is killing me. at 80 im at like 4300 rpms. i've only had to fill it once so far and that was at 280

 

00 Ek with a Mini-me and i get around 340-360 a tank with "spirited" driving. Check your plugs, wires, o2, dizzy, and fuel filter. Proper maintenance goes a long way with our cars

 

I would have to agree with everyone above, maintenance is key.

Keep your car light, and up your tire pressure for better mileage.

 

car only has 105k original,even without proper maintance,it should't be that bad 200mpg compare to 300 ,100 less mpg

 

proper maintenance is key... check for CEL's, tires etc. i drive like a grandma especially in the winter and im filling up every 2 weeks...

 

seriously,i try to change the 02sensor to improve my mileage,i check the catalyic conveter,there do not have one,where the hell is it?

 

It's really not that hard to do! I get 34-36 mpg (EJ6 D16Y7), and thats with a LOT of city driving. As long as the car is in propper running condition, it all comes down to driving habits (and how much weight you are hauling around).

Slow, steady acceleration - especially in 1st and 2nd gear where a lot of fuel is used just to get the car moving.

Deccelerating in gear as much as possible also helps with scoring better mpg. Engines actually use less fuel when deccelerating than when idling.

Wheel alignment, balance and tire pressure have their effects to. A popular Hyper Miler trick is to increase tire pressure to 40-50 psi to reduce rolling resistance (I DO NOT reccomend this at all, instead frequently check to make sure your tires are inflated properly).

Don't drive in a too high or too low of a gear. Obviously driving around in 2nd @ 35 mph isn't going to help, but also driving in 5th gear @ 35 mph isn't good either for the same reason: excess throttle position. A good example is that I have noticed better fuel economy staying in 4th gear @ 45 mph as opposed to putting it into 5th, also 35 mph in 3rd.

There are many things you can do to get better mpg, these are just the ones I notice as making the most difference.

If you have already done a full ignition tune-up I suspect you may have a lazy 02 sensor, even if it has not thrown a CEL. OBD1 Civic ECUs are less finicky than OBD2 ECUs - in other words just because there is no CEL code for a faulty 02 sensor does not mean the 02 sensor is in good working order.

Also, 100k is around the time the timing belt should be changed. Any chance the timing could be off? That can have a negitive effect on fuel economy too.

 

Wow, hopefully it's there. The 02 sensor on 92-95 Civics is right before (upstream) the catylitic converter.

Not having an 02 sensor will make you're mpg nose-dive, and should also set off a CEL.

 

new belt,tell me where is the 02 sensor

 

How is that unbelievable? Even driving mine hard I get 320miles to the tank.

 

i got honda civic 2000 and i got the same problem but with my tanks i go 240 miles.. half a tank is 150

 

 

My girlfriend's 97 DX 5 speed w/ AC averages 36-37 MPG between city and highway driving. City driving is around 32-33 MPG. If we drive pure interstate, it gets 40 MPG. This is during the summer. During the winter you can take about 3 MPG off each of those figures due to the cold and letting the car sit and warm up. These are all correct numbers figuring from filling the fuel tank and using the trip meter, not guesses.

Maintainence is the key.

 

i changed everything ,even new car 2000 civic has bad mileage,its probably the manufacturer problem not having the same mileage in every civic builded

 

I don't know what's so unbelievable about it. My mustang got around 280-300 mpg highway. and now with my dx I get around 320-350

 

damn,im not sure what to do to get that kind of mileage

 

in my 160K mile D16Y8, i get 350 miles to 1 tank...

 

I gas up around 330 miles each time. With proper math, that means I'm getting what is suggested for my car. Something like 420 miles per tank.

Remember, what you get out of one tank isn't how many miles your tank can actually run your car for.

Well, unless you're running it until it's actually empty.

Estimating the mileage by looking at the gauge also will only give you false results.

MILES / GALLONS = GAS MILEAGE

MPGS * TANK SIZE IN GALLONS = MILES PER TANK

'92-'95 Civics have 11.9 gallon tanks except the CX and VX, which have 10 gallon tanks.

'96-'00 Civics have 11.9 gallon tanks.

 

I believe the dx has a 10 gallon tank too.