my chevy cavalier wont start

Is the engine getting spark, is it getting fuel, is the security light on?

yes i checked the plugs i found a cup of gas in the 2nd cylinder i removed all 4 because the motor was not turning i had the starter tested but it seems like something is holding the motor back i put the starter back on it turned the motor okay with the plugs connected to the spark plug wires out of motor all 4 setting on a level bracket to test for spark and cranking revolutions both seemed okay i removed the fuel relay the extra gas pushed out the cylinder 1 and 2 i also found gas has traveled into oil pan the oil and gas combined was at 11 quarts never seen this before i changed the oil and filter put the plugs back in replaced the fuel relay the motor barely turned with a charged battery to it

I would say that injector is definitely stuck open and you will be lucky if the engine will last due to lack of lubrication. It wouldn't turn over because you can't compress liquid. Compress should not be confused with pressurise.

I have just experienced this with my 2001 chevy cavalier, how can I determine which injector is bad? I have gas in my oil