Acceleration problems after warm up

My car was running just fine and a couple of
days ago I came outside and started it up
and it was a little hesitant. I started driving it
and it had no acceleration with the gas pedal
all the way down. Could anybody let me
know what that might be? I've never
experienced this problem before. And I am
mechanically inclined so I will understand
what a rotary engine is made up of.
I would appreciate any help at this point it
has 197,476 miles on it.