Q: Clutch

I would check the fuses for the starter relay. You may have a blown fuse for the starter. I would have YourMechanic come and diagnose the starting problem further (https://www.yourmechanic.com/services/car-is-not-starting-inspection).

Hello. It sounds like whoever did your headliner either grounded some wires to the system or damaged the switch itself. The switch is most common cause of the problem you are having and a replacement of it will fix it....

Yes, it is harder for maintenance, and I'm not a fan of those double-clutch systems, especially on a Kia (https://www.yourmechanic.com/scheduled-maintenance/kia-optima/). I'm actually not much of a Kia fan. Kias used to be junky little hollow jumping cars 20-30 years ago....

In order to turbo charge the car you would first have to find a kit that is made for your car. Only a kit made for your car would work since there would be many changes that may cost a...

Hello. If the vehicle produced a clicking clacking sound when the key was turned then it may be possible that the battery or starter are the issue. A faulty, or low battery will cause the starter to click if it...

The black smoke indicates you have a rich fuel condition happening in your fuel intake system. This means that the fuel being supplied to the motor is too much in relation to the air supplied creating an imbalanced air/fuel ratio...

Hi there. It seems that the EGR (Exhaust Gas Recirculation) Valve is stuck and not allowing the engine to run good causing the engine to hesitate, especially when shifting. Take the EGR off and clean it. Then put it back...

Hi there. Typically when you make an aftermarket intake improvement, the next evolution is to find a way to increase fuel flow or ignition timing to allow fuel to burn more efficiently within the combustion chamber. This can be completed...

Your vehicle can use full synthetic 0w30, 5w30, 0w40, 5w40 MB approved only is recommended. You will see on the bottles MB approved.