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2004 kia optima 6 cylinder I replaced the valve covers and made sure to connect everything back just the way it was now when I crank it it cranks right up then goes dead again sometimes it will stay running but missing very rough I replaced the spark plugs and checked the wires could it be a sensor

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  • Cars & Trucks Master
  • 975 Answers

Doubtful a sensor went bad during the work,more likely one (mass airflow,map) is not plugged in all the way or a bent pin,check everything you unplugged and make sure all connections are good.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

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SOURCE: 2000 toyota tundra #5 cylinder misfire

i think #5 is on driver side the front one....

Posted on Dec 30, 2008

robshow
  • 367 Answers

SOURCE: 2004 kia optima

Try the ignition switch,

For the Crank sensor there is a small metal disc that mounts behind the sensor if that is cracked or dammaged or installed backwards you will get same results as if it wasn't Make sure the timing marks line up on your timing belt. www.kiatechinfo.com

Posted on Jan 19, 2009

  • 150 Answers

SOURCE: rough running, erratic spark

Run a compression test on the cylinders.If reading is low on any drop a little engine oil into the pot. If compression rises you have compession ring problems. Remove all plugs before you try this and place leads away from engine.

Posted on Mar 04, 2009

  • 1 Answer

SOURCE: crank sensor location on 2006 kia optima

in the tank

Posted on May 22, 2009

  • 257 Answers

SOURCE: 2004 kia optima arcing around the coil pack

the coil pack mybe bad

Posted on Aug 11, 2009

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2003 Kia optima run good til turn off and now won't start. Cranked and cranked til the starter made high pitch crank sound like it wasn't getting pressure. Noticed the surpintine turned but not timing


sounds like you need to replace the timing belt and possibly need to have the cylinder head repaired if it bent the valves, put the belt first and if it doesn't have compression then you'll need to have the head repaired

Nov 24, 2016 | 2003 Kia Optima

1 Answer

Can u tell me were the crank sensor os on my 2004 kia optima with a 4 cylinder is located


the sensor is most always located infront of the timng cover behind the crank pully or harmonic balancer on the crank shaft

Mar 23, 2012 | 2004 Kia Optima

1 Answer

My 2004 Kia optima recently died while being driven, I had it towed home...i replaced the fuel pump(fuel filter and fuel pump strainer), it also has a new battery. It started up just fine after the fuel...


Then you have a intermittent spark . Now do you have a spark tester to test spark. Its okay if you dont we have one . Oh by the way you did the fuel pump yourself. if you can do a fuel pump then you can do this to solve the no start problem. No spark tester? okay we will use that tachometer (RPM gauge). crank the engine does the tach meter reads zero at all times while cranking, if it does youll need a crank sensor. Here the story Rough running conditions and or stalling was caused by a faulty crank sensor, try shaking the connector or wiggle the crank connector then see if it starts. Youll need to inspect the connection for proper male to female connection these have been the most suspectable failure of KIA. If you decide to replace this sensor make sure connections are good, more than likely this was the problem and not the fuel pump

Apr 27, 2011 | 2004 Kia Optima

1 Answer

Where are spark plugs on 2004 kia optima and how do i get to them


if it is a 6 cylinder remove engine cover 4 ten mm bolts three are in front under coils then three are under intake if it is a four cyl remove plastic cover in center of valve cover they are under coils and i beleive there are 2 wires as well as 2 coils

Jul 22, 2009 | Kia Optima Cars & Trucks

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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

Jul 02, 2009 | 2004 Kia Optima

1 Answer

Crank no start


Remove the plugs and check you are getting compressions to the cylinders first, preferably with a compression guage, but you could use a finger, possibly this is the problem.
Suspect either bent valves or your valve timing is out?

Good Luck !
John.

Jan 13, 2009 | 2004 Kia Optima

5 Answers

2004 Kia Optima no start after timing belt, crank, cam sensor replacement


did you use aftermarket crank sensor? if so that might be your problem. dealer has several different ones, by providing vin number, but there is only one after market for all optimas 01-05. try to connect thick pink wire and thick orange wire together on the ignition failure sensor. you might have the same problem as me. good luck.

Nov 06, 2008 | 2004 Kia Optima

1 Answer

2004 kia optima


Try the ignition switch,

For the Crank sensor there is a small metal disc that mounts behind the sensor if that is cracked or dammaged or installed backwards you will get same results as if it wasn't Make sure the timing marks line up on your timing belt. www.kiatechinfo.com

Nov 06, 2008 | 2004 Kia Optima

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