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rough engine idle 2.3 2015 MKC

4700 Views 2 Replies 3 Participants Last post by  jeepwhite1
I have a 2.3 engine that runs rough and sputters on occasions. However not when I take it back to the dealership.
It idles rough (at times) and even dies. The dealers service dept. says its my fuel but I have filled up at two different stations and it still misses on both tanks of fuel. Anyone having engine problems like I've described?
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Even after 10 tanks, if there is water in there it will be at the bottom.
I would try two, even three "doses" of a gas treatment, and try to fill the the car with non-ethanol gas for a few tanks if you can find it.
Around here it is often available but in Premium only. I absolutely have to use it for my boat.
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