Now that I repaired my oil burning issue on my 1999 Corolla 270,000 miles, please help me find what's wrong with it. The thing shakes at idle, and sometimes almost stalls when going from idle. I'm thinking fuel pump, but i can't tell. It feels a bit more reluctant to start, requiring more cranks. At higher speeds i feel nothing, except perhaps a bit low on power. There's no codes, nothing. Also it's technically a Chevy Prizm. Pls halp, what do i check before parts cannoning the fuel pump?