2001 Kia Rio loses power on acceleration

2001 KIA RIO
122,000 MILES • 4 CYL • FWD • AUTOMATIC
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JILLP
  • MEMBER
  • 1 POST
My kia suddenly lost acceleration power. Then came good and did it again. I put my foot down on the accelerator and it helped a bit. The fuel pump has been replaced but I recently put 95 octane unleaded fuel > I usually use the 98 Would this be the cause ie bad petrol
Jul 15, 2010 at 2:34 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking,fuel filter or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
Jul 15, 2010 at 2:39 AM
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