Birdville205
New member
- Joined
- Jan 12, 2026
- Messages
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- Buick Ownership
- 2015 buick regal gs
I have a 2015 buick regal gs i want to know if my engine is bad on it oild was black i changed oil and spark plugs and coils but still getting p0300 also getting p0299 and a p0011 car runs really rough when its idle you can heat like a knock under the car then wen i rev to about 4000 rpm and hold it i cant hear it car sputters and don’t accelerate as it should it has a very slow acceleration here is a video i posted of the car sound

