misfire

Alrighty, I was wondering if anyone had some advice. 2000 Corollas have the piston ring defect. My Corolla has a cylinder 3 misfire after replacement of a spark coil pack, a spark plug, and all four fuel injectors. I put mystery oil in the engine last night, but it's still shaking. The check...

The problem started two or so months ago when my check engine light came on. When I got the code read, it came back with P0352, which means ignition coil B is malfunctioning. I think my mpg decreased and my car would shake sometimes, too I tested the coils by taking them out one at a time and...

So, I bought a used 2011 Corolla LE with 73,000 miles on it a few weeks ago, replaced the air filters, changed the oil, and changed the fluids. Starting a few days ago, when I start it first thing in the morning (So it's been sitting all night) it will start, then the engine will die almost...