95 240sx runs well but gets bad mileage
95 nissan 240sx s14 used to get 27mpg...currently getting around 10mpg! new 02 sensor...new fuel filter...maf checked and cleaned...air intake replaced. plugs replaced...car runs good. also, only codes was when maf was checked...never a code other than that! anyone have any ideas?
Leaking fuel injectors?
mechanic says no leaking injectors.
Possible catalytic converter is starting to fail. You replaced the O2 sensor, was it throwing a code? That same code pertaining to the sensor could also pertain to a cat going bad. Bad cat = bad gas mileage. Eventually it will lead to rough running engine, frequent stalling. A shop can use a vacuum gauge to determine if there is any clogging in the cat.
when you're drifting that thing around Laguna Seca, you might use more gas-
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