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2005 Kia Spectra Engines seems to hesitate at high speeds

Tiny
WHITE ROCKET
  • MEMBER
  • 2005 KIA SPECTRA
  • 4 CYL
  • FWD
  • MANUAL
  • 39,000 MILES
Our spectra seems to have some type of hesitation at high speeds. The engine has this sluggish-ness you only feel around 60-70mph. Car runs great other wise. It's not a tire thing casue it's been aligned and has new tires. It seems to be in the engine. We've tried fuel injector cleaners and high rated fuel but nothing seems to help. Could this be a spark issue or can you point me in a different direction?
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Saturday, December 13th, 2008 AT 1:34 PM

3 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
First thing that comes to mind is the fuel filter. If this is partially plugged, it will cause the symtoms you described.
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Saturday, December 13th, 2008 AT 3:12 PM
Tiny
WHITE ROCKET
  • MEMBER
  • 2 POSTS
We looked into changing the fuel filter but it is part of the fuel pump assembly tucked nicely in the gas tank. The filter is not a changeable part.
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Sunday, December 14th, 2008 AT 9:50 AM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
A fuel pressure test will tell if the fuel system is starving for fuel.
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Sunday, December 14th, 2008 AT 3:31 PM

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