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Had to have complete fuel sys. replaced tank lines pumps…

Had to have complete...

Had to have complete fuel sys. replaced tank lines pumps injectors .Prior to that I got 26-27 mpg now getting 21-22 Dealer says every thing is ok so Kia center is not doing anything about it except talk to dealer

Mechanic's Assistant: When did you last clean or replace your air filter? And are the oxygen sensors in good working order?

Air changed 4-5000 miles ago .I don't know if they checked oxy sensors .They say no codes show

Mechanic's Assistant: What is the model/year of your Kia?

2015 Kia Optima

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

No I am not dealer did all the work under warrenty

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

They said no codes show up and car is running fine

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Answered in 45 minutes by:
3/21/2018
Dan
Dan, Technician
Category: Kia
Satisfied Customers: 26,018
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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W​hy did everything need to be replaced?

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Customer reply replied 4 months ago
Fuel tank lining was deteriorating

Was it starting to run rough? Why were injectors also replaced?

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Customer reply replied 4 months ago
It completely stopped on me ,they said there was junk all thru the system from the break down of the tank

How many miles have you driven it since repair?

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Customer reply replied 4 months ago
Engine repair 78 WK40 Tank assembly -tube fuel feed-fuel pump &sender-Pump high pressure -Injector assy , fuel Fuel tube assy -gaskets

How many miles have you driven it since repair? Thanks

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Customer reply replied 4 months ago
Cant hear on the phone

That is website automatically offering phone call, I prefer chatting here. How many miles have been driven since repair?

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Customer reply replied 4 months ago
app.4500

Was vehicle running rough at all before it completely stopped on you? I'm assuming driving habits have been exactly the same since repair?

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Customer reply replied 4 months ago
Had 36531 miles on it when repaired and now have app 40560
Customer reply replied 4 months ago
It was fine until we started up a hill and then it quit near the top
Customer reply replied 4 months ago
driving has been much the same.

How long have you owned the vehicle?

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Customer reply replied 4 months ago
New 2015

Have spark plugs been replaced?

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Customer reply replied 4 months ago
Not that I know of unless that is part of the injector assembly

This is a tough one. I would recommend replacing the spark plugs to see if that helps if not then replace the front oxygen sensor. These are the main things that effect mileage and could have been possibly effected by debris in fuel system. Let me know if you have more questions, thanks.

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Customer reply replied 4 months ago
Would either one of these show as codes

Not at beginning stages of failure. Let me know if you have more questions, thanks.

Dan
Dan, Technician
Category: Kia
Satisfied Customers: 26,018
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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