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My 2012 kia rio cranks but doesn't turn over. I replaced the…

Hello, my 2012 kia...

Hello, my 2012 kia rio cranks but doesn't turn over. I replaced the starter and now it starts but not on the first try. Usually takes a few tries.

Mechanic's Assistant: Have you checked the fuel supply? And are all the spark plugs working?

No. I had a friend run a test on it and it gave him a code that said its my knock sensor. but I don't see how that would not let my car start.

Mechanic's Assistant: Are you fixing your Rio yourself? What have you tried so far?

No, Im not working on it myself. I will be bringing it back to my mechanic that replaced the starter.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No. thank you.

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Answered in 1 minute by:
11/17/2017
Mike V.
Mike V., Technician
Category: Kia
Satisfied Customers: 27,744
Experience: I have 25 years experience working on cars. I am also a factory trained Subaru and Nissan Tech.
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I would check the fuel pressure. Usually when you have issues like this it's because the fuel is running back into the tank instead of keeping pressure up at the fuel rail. The knock sensor will not affect the engine starting at all. So, I would start with the fuel pressure. If the pressure is good, then you might have an issue with the mass air flow sensor IF this car uses one. Some models do and some don't. If it has one, try unplugging it before you go to start the car and see if it fires right up.

If it does, replace the maf sensor.

Please let me know if there is anything else I can do to help.
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Mike V.
Mike V., Technician
Category: Kia
Satisfied Customers: 27,744
Experience: I have 25 years experience working on cars. I am also a factory trained Subaru and Nissan Tech.
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