I took my car to Purrfect Auto to get a diagnosis of my engine to check the compression because it lost power and has rough idle. I tried changing the spark plugs, but could not remove because they were too tight. They told me in order to complete the diagnosis,

they would need to remove the valve cover and would cost another $150. I said to do it. They came back to me and said the engine is shot and needs a new one for $4, 500 or a used one for $2, 200. I told them I was going to pick the car up and I hung up. They called

back saying they could get it running for another $300 and I told them to go ahead. The car is running okay now, but I now hear knocking in my engine and I'm still concerned there may be damage and did not make me aware. Here is a list of the things they did. Look at what they charged me for reconditioning the old spark plugs which they replaced. Also, I don't know why they charged me for things I told them were already done at another shop. (Fuel injection service, engine chem flush, oil change.) Also, when I left the

shop and got on the freeway, I heard somthing under the car, "Thug, thug, thug". I looked in my rearview mirror and saw something black rolling away. I pulled over and opened the hood and oil was all over the place and there was no oil cap. I walked back searching on the side of the freeway and found my oil cap and put it back on. I called to inform them and they acted like I was

crazy and could never happen. They insist these charges are legitimate and refuse to tell what was really done to the car.