FUEL CONSUMPTION

1997 Mazda 323

Tiny

calamares125

October, 22, 2010 AT 10:05 AM

1997 Mazda 323 4 cyl Front Wheel Drive Automatic 125000 miles

MY CAR CONSUMES 1LITER PER 5KILOMETERS IN CITY DRIVING WHAT SHOULD I CHECK TO MAKE IT ECONOMICAL?AIR AND FUEL FILTER IS NEW. MY FRIEND TOLD ME TO CHECK THE KNOCK SENSOR. IS THERE REALLY A SUCH THING?

1 Answer

Tiny

rasmataz

October, 22, 2010 AT 4:11 PM

Probable causes of an engine running rich are as follows: 1. Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.

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