I picked my 8 up almost 6 months ago and I have loved it ever since I've bought it. I changed the plugs and wires back in March but I couldn't get to the coils. I didn't think to have a compression test done on it when I bought it... after all, it was VERY spur of the moment that I purchased the car. Recently, however, I have noticed that she seems to be a little down on power. I have been running 89 octane all summer and I lost some performance. I filled up on 91 a few days ago and have noticed two things: a significant drop in mpg and it seems to not be a quick as she was before the summer. I'm thinking the coils may have gone bad since they go bad with the engine heat anyway not to mention that it has been over 90 degrees for the past month everyday. Do you guys think it could be the coils? Any and all advice is appreciated guys!
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