03 kia rio cinco herks and****** under acceleration but only at 1/4 tank and check engine light comes on

2003 KIA RIO
127,000 MILES
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STEVEF4524
  • MEMBER
  • 2 POSTS
the lower the gas gauge goes only after 1/4 tank the worse it will get
the timing belt was replaced about 15000 ago
Oct 11, 2011 at 12:24 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Check engine light on
https://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on
Oct 11, 2011 at 12:26 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.