Question about 2005 Kia Amanti

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2005 Kia amante, suddently ,like a fuse goes out the engine started running rough,at low speeds, raw gas smell, stop & go is horrible in town. On the interstate getting up to 70-80 is possible. White smoke of raw gas at low rpm yet eng temp is normal, radiator fluid is constant. I suspect an electronic failure given the immediate nature of the problem. could a ecm do this or other module. Is there a test for it ?advance auto said their tester showed everything fron 2 upstream oxy sensors failures to 3 cyls not firing properly. with limited funds any help would be appreciated

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My guess would be injector control circuits failed. Or perhaps you got some bad gas which gummed up your injectors. If that is the case, the injectors cannot shut the fuel flow off, for the same reason you cannot completely closed a door if your foot is in the way. It is possible but unlikely, that a computer glitch got the engine computer out of kilter, which can often be corrected by disconnecting the battery for 15 minutes, then reconnecting it. In that case, the computer will go back to original settings programmed in a ROM (Read Only Memory). Good luck!

Posted on Apr 22, 2017

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SOURCE: 2005 amante V6 started running rough, smell of

Run a compression test. Sounds like a bad head gasket, letting coolant into the cylinder and causing misfire. I think you will find one (or two adjacent) cylinders have much lower compression than the others. There should not be more than 20% difference from highest to lowest.

Posted on Sep 05, 2010

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2005 amante V6 started running rough, smell of raw gas, chk eng light on white smoke smelling of raw gas. changed plugs , wires, ran injecter cleaner through, gets about 1 mile per dollar of gas ....


Run a compression test. Sounds like a bad head gasket, letting coolant into the cylinder and causing misfire. I think you will find one (or two adjacent) cylinders have much lower compression than the others. There should not be more than 20% difference from highest to lowest.

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My personnel fix for this.

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