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Has anyone else experienced my issue with a possible fix. 2016 kia optima 1.7crdi auto. Once or twice a week, when driving for 30 mins or or longer. If I put my foot down to accelerate or overtake, the car bogs down, jerks a bit then won't go over 3k rpm. It goes very flat. Pull over, switch off and on and its OK until next time it does it. Cars had a full service, full diagnostics and not a single fault code. It's getting dangerous at times, especially when overtaking
 

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2013 Kia Optima
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557 Posts
Sounds like either Turbo failure, or oil/fuel starvation... Better check all critical fluid levels.
 

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2011 Kia Optima
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3,395 Posts
I looked for wastegate adjustment/testing and couldn't find any info.
Maybe use a real time scan tester in the OBDII to check all specs.
 
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