Hello

My 2005 Mazda 6 cranked but no start

Works done for it

-Check engine light was on P0300, P0303, P0301
-Valve cover gasket was bad, oil flooded spark plugs - Replaced valve cover gasket, spark plugs, ignition wires and coil pack. Car ran for a few days, checked engine light came back P0303.

Reset the light, replaced coil pack to another one because we thought it was bad. Has spark coming from Spark plugs. Few days later, P0303 came back. Reset the light again.

Few days later, one morning waking up start the car, car cranks but not start, all lights came on. Jump start, still no start.

What could be the issue? Video uploaded to youtube


thanks for input.