Question about 2004 Kia Optima

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2004 kia optima lx 6 cyl with check engine light on. Code came back as lean fuel. Stalls when I put gas in. What could this be?

The car sat for several months without being driven, started a few times. When I finally started driving it the check engine light came on and the car just wasn't running right (performance wise) so I took to my uncle (mechanic) He put an additive in it and cleared the code out. The light is back on but the performance issues resolved. I am also having trouble with starting after putting fuel in it. No matter how much fuel I put in it the car hesitates to start and then stalls out. I have to hold my foot on the gas and keep RPM's up for a minute or 2 and then its fine. I can turn the car off and re-start without any problems. Can someone help me out? My uncle is stumped as to what it can be. He does all the maintenance on my car.

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  • Kia Master
  • 11,082 Answers

Code came back as lean fuel ? what code P0 what ?

Posted on Mar 24, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 625 Answers

SOURCE: 2004 optima wont stay running after fillup

semms to be like some of the vapor lines coming from thank to engine might be flooding your engine,
but also locate the fuel pressure regulator at the engine compartment and unplud the vacium hose, if you see any fuel coming out from fuel pressure regulator, or if the vacium hose smeel like fuel, then the regulator is not good.

Posted on Sep 11, 2008

seans46
  • 161 Answers

SOURCE: 2004 KIA Optima LX timing belt/water pump

The thing is your doing the timing belt the water pump is right their with it . it should cost you much more at all besides the cost of the water pump. When doing a timing belt I have a rule that I go by The timing belt/seals =cam , crank , any pulley & tensioner & water pump all get replaced at the same time. I did a t-belt on a Audi A-8 very complex whole front of car has to come off as well, he didnt want to do w-pump & thermostat his thermostat was their as well not even a month later the water pump gave out he had to pay double the price because he didnt want to do it when I had it apart the first time. And make sure mechanic is ase certified . good luck

Posted on Jul 02, 2009

pippall
  • 1486 Answers

SOURCE: 2008 Kia Optima Check Engine Light

Just replace the air flow meter.That sounds like your problem.

Posted on Sep 16, 2009

emissionwiz
  • 75108 Answers

SOURCE: 2008 kia optima LX Check Engine Light

P0442 EVAP Leak Monitor .040 Leak Detected (Medium Leak)

P0456 EVAP Leak Monitor .020 Leak Detected

replace your gas cap and clear codes, then wait and see if light comes back on, if it does you have a more serious problem like a fuel tank leak or a defective fuel tank pressure sensor.

Posted on Sep 17, 2009

Molson02536
  • 3854 Answers

SOURCE: My son's 2004 Kia Optima started stalling on the

Start with the simple and replace the fuel filter. The fuel filter should be replaced every 15,000 miles or once a year to ensure the fuel system is running 100%. Auto Zone will have the fuel filter and can give you the step by step instructions to getting the job done with common tools. If it's the fuel pump failure, you have not gotten the car restarted. Good luck and keep me posted, be glad to know you got your car running 100% again soon and please rate.

Posted on Jan 11, 2010

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1 Answer

2004 Kia Optima PO171 Check engine light came on


P0171 = System too lean, bank 1 - probable cause is - Intake/exhaust leak, Air system, MAF/VAF sensor, fuel pressure pump, injector(s), HO2S.

Hope that helps, a little anyway.

Feb 25, 2015 | 2004 Kia Optima

1 Answer

I have a 2012 Kia optima and it won't start. When I try to start it, it hesitates as if it wants to start but then the alarms goes off. Can you help? Thank you


Do you have any lights lit on dash ? check engine , security anything like that ? If it is the anti-theft system all you can do is have it towed to the dealer !

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Why does my car have heaps of pedal but no power off the mark?


run the fault codes and check for a faulty accelerator position sensor

Jan 15, 2015 | 2012 Kia Optima LX Sedan 2.4L 4-cyl....

1 Answer

What size enigne does a 2004 kia optima have?


if it is a 4 cyl your engine size is 2.4 (2351cc) if it is a 6 cyl is 2.7 (2656cc).

Oct 18, 2011 | 2004 Kia Optima

2 Answers

My car will only go 30 mph when i try to give it gas. what is wrong ? it have 136.000 miles on it 2004 kia amanti 6 cyl. /


Sounds like you have fuel pump issues. May need to replace the fuel pump. Does the check engine or service engine soon lights come on? That or maybe injectors, or something alone the fuel system line. First check would be fuel pump.

Jan 08, 2011 | 2004 Kia Amanti

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2008 kia optima LX Check Engine Light


P0442 EVAP Leak Monitor .040 Leak Detected (Medium Leak)

P0456 EVAP Leak Monitor .020 Leak Detected

replace your gas cap and clear codes, then wait and see if light comes back on, if it does you have a more serious problem like a fuel tank leak or a defective fuel tank pressure sensor.

Sep 16, 2009 | 2008 Kia Optima

2 Answers

2008 Kia Optima Check Engine Light


Just replace the air flow meter.That sounds like your problem.

Sep 16, 2009 | 2006 Kia Amanti

6 Answers

2003 kia optima 6 cylinder hard to start after fillups only


I had the same problem along with a rough idle and found out it was my EVAP canister.

Dec 10, 2008 | 2004 Kia Optima

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