I drive a 2002 S2000 with 79k miles. My last 3 gas tanks gave been horrible. Averaging about 17 miles per tank. I rarely hit Vtec. I drive the same route everyday at the same time at the same speed. I remember I used to get about 100-120 miles at half tank. Now I get about 80-90 miles at half. Something is wrong, I know its not my gas gauge.

I will be taking my car in to SoCal Motorworks next weekend and have Andy take a look at it. As for now, what can i check for starters?
Spark plugs? Psi? I might be due for a valve adjustment?
*sidenote* I also burn a little oil, which i think is normal for an Ap1. Please help, as this is my daily driver.

Thanks you guys.

 

check the plugs, o2 sensor, are you driving on the highway or is this city?

 

Will do! It's city, but at 5:30 am, so not much traffic, & mostly green lights

 

Most likely up stream O2 sensor. Like a 50 dollar sensor at auto zone if you go univeral. Pretty sure that would throw a CEL too if your engine lights on, but have heard of them going bad and no codes thrown too

 

Sound's like you just need to do a tune up. You don't have to replace your upstream o2 sensor, you can always just clean it. If the sensor stops working, it stops working, and it will throw a code.

 

Wow 120 miles for city.... That's really low. I get 145 a half a tank on city driving. I would suggest you do a tune up and check your tire pressure .

 

17 in the city isnt really bad.

 

Thanks guys. & No there is no cel. How can I clean the o2 sensor? Isn't that bad for the sensor?

 

Just replace the sensor.

 

Any chance it could use a valve adjustment?