My Car Burn To Much Fuel

[cb786]

What causes a car to waste gas fast cuz I had a half tank of gas drove like 15-20miles and now its like in between the E and half mark..I did put some seafoam in my gas tank 2 months ago maybe that was a bad idea idk..I have new distributor,cap,rotor'plugs,sri and a cheap new cat converter..the car also has a leak in the exhaust somewhere around the flex pipe.I'm having a headache trying to figure out the problem that I can't solve



Any help would be appreciated

THANKS

[agol]

o2 sensor?

[deevergote]

Is your check engine light on?

Do you smell fuel at all?


Aside from a leak or some other fault that we're not aware of yet, the o2 sensor is indeed the most likely culprit.

[cb786]

Ohhhhhhhhhh O2 sensor ok ima have that check out...is it a expensive fix or a easy DIY

[agol]

you cant diy an o2 sensor. when its done, its done. check the classifieds to see if anyone with a part out has one for sale. if not go to your local auto parts store. youll prob pay in the range or 50-90 bucks. or you can go without fixing it and getting 5 mpg. your choice.

[cb786]

I have no cel and sometimes I do smell fuel

[old honda tek]

you need to accuratly check your fuel milage fill the tank full , reset the trip meter , drive 100 miles fill the tank back to full,write down how many gallons and divide 100 miles by the number of gallons .that will give you mpg...

[cb786]

That's a good idea ima try it when I fill up next time probably tomorrow

[deevergote]

If you smell fuel, you may have a leak.

I would replace the o2 sensor anyway. Get a new unit, NTK/NGK or Denso ONLY. They may be a bit more expensive than most others, such as Bosch, but the cheaper ones will not work properly. You'll be throwing money away to buy one of those.

To check for a leak, turn the car on, drive around the block, park somewhere clean (where you can see a dripping liquid making marks), let it idle for a bit, and see if there are any spots on the ground. While the car is idling, smell around for the scent of fuel. If you have a fuel leak, that is a serious fire hazard, and it should be fixed ASAP, before your car goes up in flames.