Q: Rough idle
my son put gas in the car, when he started the car there was one loud knock. The car then in park still began to idle, and sound like a diesel fuel running car, with a somewhat put sound. Now when i drive the car the sound goes away, and the car accelerates really smoothly. when im at a stop sign, or traffic light the sound re occurs.
My car has 146000 miles.
My car has an automatic transmission.
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