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2001 Kia Rio loses power on acceleration

Tiny
JILLP
  • MEMBER
  • 2001 KIA RIO
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 122,000 MILES
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
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Thursday, July 15th, 2010 AT 2:34 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Thursday, July 15th, 2010 AT 2:39 AM

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