Question about 2004 Kia Amanti

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Does not hold idle, smoke and gas out of tail pipe. AAA road assistance driver says MAF sensor. How do I test MAF sensor?

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  • cthomas009 Oct 02, 2009

    Thanks. I removed MAF connector from sensor and it idles just fine. Does this show that the MAF is bad?
    Or is it in limp home mode.
    I Googled as you suggested and responses were
    bad MAF or relays.

  • Kimbo too May 11, 2010

    sounds like it's choking to death on fuel. try a google search with your make and model and type in MAF sensor.

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1 Answer

No power when I step on the gas and is smoking bad


Smoke from tail pipe or smoke from under hood?
A general rule of thumb if it is coming from tail pipe the color of smoke will tell you a lot.

White and thick means head gasket failure, Blue means oil is being burned.

I would recommend you check the seal of everything and make sure it is cleaned that had to do with vacuum or fuel distribution. EGR valve (gasket fails sometimes) IAC valve, MAP and MAF sensors, Fuel injectors, FPR (this will need replaced if leaking),

Also check you coolant and oil look for signs of either one mixing with one another, smell you coolant and make sure it don't smell like gas either, look around where the head meets the block and make sure you don't have any coolant leaking there. The smoke if from the tail pipe makes me think head gasket and these are simple checks. They are not 100% diagnosis but can lead you to the problem.

Also one obvious thing would be make sure no one put anything in your gas tank.

I would most likely look at the injectors first then the head gasket next.

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Poor fuel economy


If there is a vac leak or a split in the hose between the intake and the MAF you can get a code for the sensor. The code is saying the data from the sensor is not what it should be, not necessarily that the sensor has failed.
Clogged air filter or box could cause a problem too.

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You may have to have a shop smoke test the
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take it to AutoZone and get the code read. It will tell you where the problem is.
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you have water in gas your going to have to drop gas tank and clean or you can try gas cleaner maybe that will fix the problem.

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Remove plugs and check their condition. Look for coils or wires leaking. Check compression and and injector operation. Do a block test to check for the presence of HC in the cooling system this would be indicative of a blown head gasket.

Oct 22, 2009 | 2004 Kia Amanti

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2004 Kia Amanti. Does not hold idle. Smoke and gas out of tail pipe. AAA driver says MAF sensor. How do I check MAF sensor?


Dont trust a wrecker driver. theres a reason they tow cars and not work on them. have a qualified shop check it and recommend repairs. you dont want to waste money guessing.

Oct 02, 2009 | 2004 Kia Amanti

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