Question about 1999 Kia Sephia

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Kia sephia 1999 misfireing still not running right

KIA Sephia 1999 misfiring still not running right after spark plugs replaced now what

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  • mike loshbough
    mike loshbough May 11, 2010

    did you replace plug wires

  • c38hot May 11, 2010

    was there oil in the spark plug holes ? spark will take shortest path , if oil or water is present around plugs , it will misfire , if spark plug boots are oil soaked , same effect , pull codes , should tell which cylinder or cylinders not firing



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Coil packs or wires

Posted on Jul 07, 2009

  • claytonjburg Jul 20, 2009

    could be yor coil packs



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Cylinder 1 misfire detectedrich or lean air/fuel mixture fuel injecter fault and faulty crank shaft sensor

Wow... Thats a lot of diagnostic codes. First... The cyl #1 misfire will cause the Engine to run rich giving you a rich running engine. Therefore the rich lean code. This misfire on cyl #1 can also throw a crankshaft sensor code as it will slow down engine rpm. I would change the spark plug and ignition coil to cyl#1 and have the codes erased and see if that solves the problem. If not, you then need to persue any codes that may reappear.

Jun 06, 2015 | 1999 Kia Sephia

1 Answer

What cause 1997 kia sephia jolk when im driving.

The most common cause of this would be an engine ignition misfire, if that is the case the Check Engine waring light should be on and blinking when the misfire corrs.

Feb 13, 2012 | 1997 Kia Sephia

1 Answer

My 2001 kia is misfiring on cylinder number 3 per computer. I changed the spark plugs and the problem cleared up fo a day. now we're back to square one. I was going to change the wires and coils next....

I would say that you are on the right track. I would do the wires next and see if that fixes it. Try swapping the coils to see if the misfire moves before replacing that component. If after all that you still have miss going on then start considering compression check and possibly leak down check Sounds like you got a good beat on it. Good Luck

Feb 22, 2011 | 2001 Kia Sephia

1 Answer

How sparks plugs are needed for a 2001 kia sephia

4 just lift the plastic cover on the valve cover and you will see.

May 25, 2010 | 2001 Kia Sephia

1 Answer

1999 sephia kia has bad missing in it. Worst when on strong pull.

Change your plugs, sounds like they are worn and nit firing as strong when on a pull. Or check for jumping sparks from the engine area at night. It could be a wire jumping out sparks hitting any metal around the wire.

Jan 18, 2010 | 1999 Kia Sephia

1 Answer

2000 kia sephia replaced engine now no spark

are you getting fuel? a bad sensor or timing of f will cause the ecm to shut down fuel and spark

Jun 16, 2009 | 1997 Kia Sephia

2 Answers

2000 Kia Sephia p0303 code engine misfires

do a compression test. cylinder 3 could have a bad valve lifter or sephia dont have push have a bucket type followers.a intake leak to that cylinder can also cause misfire problems.

Jun 06, 2009 | 1999 Kia Sephia

1 Answer


clear the errors and run car, then scan agian, and see what code comes back up.

May 28, 2009 | 2000 Kia Sephia

1 Answer

2000 Kia Sephia check engine light

Spark plug wires cause a big part of this also as I have had 3 kia cars that misfire idle rough engine light comes on causes codes to come on and we finally figured it out to change the spark plug wires hope this helps

Jan 12, 2009 | 2000 Kia Sephia

3 Answers

Kia sephia 1998

have you changed the fuel filter.

Oct 05, 2008 | 1998 Kia Sephia

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