There wasn’t any fuel in the fuel pressure regulator hose, so that shows the regulator diaphragm isn’t leaking (allowing extra fuel to be drawn into the engine cylinders).
It has spark. It has fuel. It may have too much fuel. The spark may be at the wrong time. Timing could be off; but, it did run for a while after you changed the timing chain; so, that should be ok.
Did you try to start with the #6 and #9 fuel injector fuses pulled? Did it run for a few seconds? Results?
Another way to clear a flooded engine is to hold the gas pedal to the floor and crank the engine. Ease up on the gas as (if) the engine starts.
yes i did do what you told me to do and i got nothing. I backfires occassionally. is that from the gas and the spark mixing?
how do you stop a car from burning to rich?