It's my guess that the injectors may be clogged up. I am just guessing.
You should consider buying a repair manual from a auto store such as
NAPA. There may be instuctions on how to remove and clean the injectors.
I have never done it since I use fuel injector cleaner about once every
two months to keep them cleaned out. You may have "dirty" gas or gas that
has water in it. If so, you will continue to have problems until that tank
of gas is used. Don't ever buy gas at that station again.
Have you determined whether or not your timing belt is working correctly.
If the timing belt broke  or is stripped, you will not be able to start
your engine.
Jason