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Car hesitation

Tiny
FREDAG
  • MEMBER
  • 2003 KIA SEDONA
  • V8
  • FWD
  • AUTOMATIC
  • 88,000 MILES
Car smokes and burns gas fast and is hard to get up a bridge
Monday, January 24th, 2011 AT 10:18 PM

2 Replies

Tiny
FREDAG
  • MEMBER
  • 2 POSTS
Im having poor gas miledge and black smoke and hesitation and hard to get up a bridge
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Monday, January 24th, 2011 AT 10:24 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1. Excessive fuel pressure can be cause by restricted fuel return line
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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Thursday, March 17th, 2011 AT 10:09 AM

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