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Failed emmission test due to fuel system too lean

Tiny
VENTURA
  • MEMBER
  • KIA
:roll: I have a 2001 Kia Optima L4-2.4L. It failed the emmission test. The MVD employee indicated that piston #1 is running too lean. He couldn't give me any more information. What repairs can be done to fix this? :Cry:
Saturday, March 4th, 2006 AT 1:07 PM

3 Replies

Tiny
VANDRAGON
  • MECHANIC
  • 298 POSTS
I think I would get a second opinion. How can a car that burns too lean and not too rich fail?
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Monday, March 20th, 2006 AT 2:23 PM
Tiny
FLYNNTH
  • MEMBER
  • 4 POSTS
Sounds like a faulty or dirty injector. Might try having fuel injectors flushed. Could also be the fuel filter or fuel pump.
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Monday, March 20th, 2006 AT 5:39 PM
Tiny
CODY-ODY
  • MECHANIC
  • 57 POSTS
I agree with Vandragon and get a secong opinion, if your injectors were the problem you would also have a performance problem and probably some misfire codes.
You might be looking at a vaccum leak but I don't see how this "lean " condition could make you fail the test. Is it possible that the "tech" made a mistake and got mixed up and told you the oppite. Get a print out if you can of the test failure.
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Monday, July 10th, 2006 AT 7:12 PM

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