2002 Kia Sportage chugging

2002 KIA SPORTAGE
70,000 MILES • 4 CYL • 4WD • MANUAL
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SCARYMARY
  • MEMBER
  • 1 POST
hi
we have replaced the head on this car and the car will run but is now chugging the engine starts and runs but chugs
the car was put on a diagnostic machine and is reading misfire detected on 1 and 3
could you please help with some advice
Jul 31, 2009 at 12:04 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jul 31, 2009 at 4:15 PM
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GATEKEEPERATNIGHT
  • MEMBER
  • 4 POSTS
we had the same problem with the code saying misfire on 1 and 3 and it was bad fuel injectors they are electronical so they go out need to change them and u will be fine ours runs great after we replaced them
Aug 16, 2009 at 7:53 PM