I had a junkyard motor put into my car February 2013. The engine burns excessive oil. A year ago a man came out and helped me put xp performance plugs into the engine to stop the problem. It worked. Several months ago every now and tehn I would feel a shudder under me sometimes even in park. A tow company got a hold of my car recently and on my way back home I was losing power and could barewly get the engine over bridges. I am pulling a new code P0442. I never pulled that code before until after the tow company got my car. I am not currently pulling amisfire code. I put stp into a full gas tank recently and noticed a slight improvement. I still can't pick the car up to speed over 2 rpms without it bumping under me. What do you think it could be? My guess is a hose has come loose or was pulled on by the tow company. It is doing this often
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