Car started running weird after i had oil changed

2002 KIA RIO
115,000 MILES
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GREGWA262008
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When you first start and go it acts like injectors are clogged but runns fine afterwards. runs like injectors are clogged after just having oil changed switched from 10w 30 to 5w 30 because they said dealer recommended it but the very next day is when it started acting up when it was cold thought it was bad gas but run it all out and added complete fuel system cleaner and put new gas in but still does the same but when car warms up good it runs fine like nothing is wrong no black smoke out the exhaust or anything like that either
Feb 26, 2012 at 3:29 PM
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RASMATAZ
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Do you have check engine light?

Check the fuel pressure with a gauge if its within specs-start here
Feb 26, 2012 at 5:12 PM
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RIVERMIKERAT
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Have it scanned for both soft and hard codes.
Feb 26, 2012 at 5:17 PM
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GREGWA262008
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ok thanks and no check engine light yet but i will have the fuel pressure gauge see where that lands me

THANKS AGAIN
GREG
Feb 27, 2012 at 3:32 AM