1999 Sunfire won't start.

my 1999 sunfire wont start, it trys to if i hold the peddle to the floor, gas peddle. anything?
It had a crank shaft sensor code, I reset it and changed the sensor. Still no start!
It had a crank shaft sensor code, I reset it and changed the sensor. Still no start!
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How To Use Spark Plug Tester
Here's a video that shows you how to CHECK FUEL PRESSURE and FUEL PUMP CONDITION
And one on CHECKING INJECTOR PULSE