2015 Kia Optima SX Turbo
167,891km
Automatic transmission
I started noticing a slight loss of power in the morning when I first started driving. No other problems.
I drove 45 minutes parked and shut off the car with no issues. An hour later, I started the car and got 6 kilometers down the road with an amber check engine light. I parked in a safe place, looked under the hood with no visible issues.
I get back in the car, start driving and I now have this terrible knocking sound whenever I apply light or heavy pressure to the accelerator.
The sound is not as noticeable at idle but is still prevalent. The harder I hit the accelerator the worse the noise gets. I have not used any scan tools or done much troubleshooting.
Kia/Hyundai cannot build motors correctly. Google Hyundai/Kia engine tick. And I’m sure even the class action will come up for it. The 2013-17 Elantra’s and Kia Optimas are known for this. Hyundai and Kia in Canada were forced to replace these motors because Hyundai and Kia knew they were built wrong. America nothing happened and Kia/ Hyundai are blaming owners for the motors going bad.
Thankyou for your feedback! Although not good... I believe this may be exactly what I'm looking for. Worn out pistons because the factory built them too short. In the winter, they have too much play.